Connect public, paid and private patent data with Google Patents Public Datasets

Data storage management system and method

Download PDF

Info

Publication number
US20050207235A1
US20050207235A1 US11130940 US13094005A US2005207235A1 US 20050207235 A1 US20050207235 A1 US 20050207235A1 US 11130940 US11130940 US 11130940 US 13094005 A US13094005 A US 13094005A US 2005207235 A1 US2005207235 A1 US 2005207235A1
Authority
US
Grant status
Application
Patent type
Prior art keywords
storage
data
device
physical
interim
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US11130940
Inventor
Stephen Blendermann
Alan Sutton
Robert Raicer
L. Anderson
Clayton Ruff
William Kefauver
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Storage Technology Corp
Original Assignee
Storage Technology Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

Links

Images

Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRICAL DIGITAL DATA PROCESSING
    • G06F12/00Accessing, addressing or allocating within memory systems or architectures
    • G06F12/02Addressing or allocation; Relocation
    • G06F12/08Addressing or allocation; Relocation in hierarchically structured memory systems, e.g. virtual memory systems
    • G06F12/0802Addressing of a memory level in which the access to the desired data or data block requires associative addressing means, e.g. caches
    • G06F12/0866Addressing of a memory level in which the access to the desired data or data block requires associative addressing means, e.g. caches for peripheral storage systems, e.g. disk cache
    • G06F12/0873Mapping of cache memory to specific storage devices or parts thereof
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRICAL DIGITAL DATA PROCESSING
    • G06F12/00Accessing, addressing or allocating within memory systems or architectures
    • G06F12/02Addressing or allocation; Relocation
    • G06F12/08Addressing or allocation; Relocation in hierarchically structured memory systems, e.g. virtual memory systems
    • G06F12/0802Addressing of a memory level in which the access to the desired data or data block requires associative addressing means, e.g. caches
    • G06F12/0866Addressing of a memory level in which the access to the desired data or data block requires associative addressing means, e.g. caches for peripheral storage systems, e.g. disk cache
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRICAL DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06Digital input from or digital output to record carriers, e.g. RAID, emulated record carriers, networked record carriers
    • G06F3/0601Dedicated interfaces to storage systems
    • G06F3/0602Dedicated interfaces to storage systems specifically adapted to achieve a particular effect
    • G06F3/0604Improving or facilitating administration, e.g. storage management
    • G06F3/0605Improving or facilitating administration, e.g. storage management by facilitating the interaction with a user or administrator
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRICAL DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06Digital input from or digital output to record carriers, e.g. RAID, emulated record carriers, networked record carriers
    • G06F3/0601Dedicated interfaces to storage systems
    • G06F3/0602Dedicated interfaces to storage systems specifically adapted to achieve a particular effect
    • G06F3/0604Improving or facilitating administration, e.g. storage management
    • G06F3/0607Improving or facilitating administration, e.g. storage management by facilitating the process of upgrading existing storage systems, e.g. for improving compatibility between host and storage device
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRICAL DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06Digital input from or digital output to record carriers, e.g. RAID, emulated record carriers, networked record carriers
    • G06F3/0601Dedicated interfaces to storage systems
    • G06F3/0602Dedicated interfaces to storage systems specifically adapted to achieve a particular effect
    • G06F3/061Improving I/O performance
    • G06F3/0613Improving I/O performance in relation to throughput
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRICAL DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06Digital input from or digital output to record carriers, e.g. RAID, emulated record carriers, networked record carriers
    • G06F3/0601Dedicated interfaces to storage systems
    • G06F3/0602Dedicated interfaces to storage systems specifically adapted to achieve a particular effect
    • G06F3/0614Improving the reliability of storage systems
    • G06F3/0617Improving the reliability of storage systems in relation to availability
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRICAL DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06Digital input from or digital output to record carriers, e.g. RAID, emulated record carriers, networked record carriers
    • G06F3/0601Dedicated interfaces to storage systems
    • G06F3/0628Dedicated interfaces to storage systems making use of a particular technique
    • G06F3/0655Vertical data movement, i.e. input-output transfer; data movement between one or more hosts and one or more storage devices
    • G06F3/0656Data buffering arrangements
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRICAL DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06Digital input from or digital output to record carriers, e.g. RAID, emulated record carriers, networked record carriers
    • G06F3/0601Dedicated interfaces to storage systems
    • G06F3/0628Dedicated interfaces to storage systems making use of a particular technique
    • G06F3/0662Virtualisation aspects
    • G06F3/0664Virtualisation aspects at device level, e.g. emulation of a storage device or system
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRICAL DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06Digital input from or digital output to record carriers, e.g. RAID, emulated record carriers, networked record carriers
    • G06F3/0601Dedicated interfaces to storage systems
    • G06F3/0668Dedicated interfaces to storage systems adopting a particular infrastructure
    • G06F3/0671In-line storage system
    • G06F3/0683Plurality of storage devices
    • G06F3/0686Libraries, e.g. tape libraries, jukebox
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06QDATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q10/00Administration; Management
    • G06Q10/10Office automation, e.g. computer aided management of electronic mail or groupware; Time management, e.g. calendars, reminders, meetings or time accounting
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRICAL DIGITAL DATA PROCESSING
    • G06F12/00Accessing, addressing or allocating within memory systems or architectures
    • G06F12/02Addressing or allocation; Relocation
    • G06F12/08Addressing or allocation; Relocation in hierarchically structured memory systems, e.g. virtual memory systems
    • G06F12/0802Addressing of a memory level in which the access to the desired data or data block requires associative addressing means, e.g. caches
    • G06F12/0806Multiuser, multiprocessor or multiprocessing cache systems
    • G06F12/084Multiuser, multiprocessor or multiprocessing cache systems with a shared cache
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRICAL DIGITAL DATA PROCESSING
    • G06F2212/00Indexing scheme relating to accessing, addressing or allocation within memory systems or architectures
    • G06F2212/21Employing a record carrier using a specific recording technology
    • G06F2212/211Optical disk storage
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRICAL DIGITAL DATA PROCESSING
    • G06F2212/00Indexing scheme relating to accessing, addressing or allocation within memory systems or architectures
    • G06F2212/21Employing a record carrier using a specific recording technology
    • G06F2212/213Tape storage
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRICAL DIGITAL DATA PROCESSING
    • G06F2212/00Indexing scheme relating to accessing, addressing or allocation within memory systems or architectures
    • G06F2212/22Employing cache memory using specific memory technology
    • G06F2212/221Static RAM
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRICAL DIGITAL DATA PROCESSING
    • G06F2212/00Indexing scheme relating to accessing, addressing or allocation within memory systems or architectures
    • G06F2212/22Employing cache memory using specific memory technology
    • G06F2212/224Disk storage
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S707/00Data processing: database and file management or data structures
    • Y10S707/99951File or database maintenance
    • Y10S707/99952Coherency, e.g. same view to multiple users
    • Y10S707/99953Recoverability
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S707/00Data processing: database and file management or data structures
    • Y10S707/99951File or database maintenance
    • Y10S707/99956File allocation
    • Y10S707/99957Garbage collection

Abstract

A data storage management system and method includes a physical storage, an interim storage which acts as a virtual storage to the physical storage, and a manager. The manager assigns a first interim storage portion to the first computer for a time duration in lieu of the physical storage upon receipt of an allocation request from the first computer requesting allocation of data storage space on the physical storage, and assigns a different second interim storage portion to the second computer for a time duration in lieu of the physical storage upon receipt of an allocation request, during the time duration in which the first interim storage portion is assigned to the first computer, from the second computer requesting allocation of data storage space on the physical storage so that the computers have simultaneous access to the interim storage and the physical storage is free from monopolization by the computers.

Description

    CROSS-REFERENCE TO RELATED APPLICATIONS
  • [0001]
    This application is a continuation of U.S. application Ser. No. 10/255,890, filed Sep. 26, 2002, now U.S. Pat. No. ______; which is a continuation of U.S. application Ser. No. 09/121,254, filed Jul. 23, 1998, now U.S. Pat. No. 6,789,161; which is a continuation-in-part of U.S. application Ser. No. 09/110,217, filed Jul. 6, 1998, now U.S. Pat. No. 6,094,605.
  • BACKGROUND OF THE INVENTION
  • [0002]
    1. Field of the Invention
  • [0003]
    The present invention relates generally to a data storage arrangement.
  • [0004]
    2. Background Art
  • [0005]
    Generally, automated cartridge systems (ACS) provide a mechanism by which multiple users in a data processing system can have common access to multiple data storage subsystems such as magnetic tape cartridge devices. In conventional tape systems, data files generated by remote user computer systems for storage on a particular tape cartridge include a predetermined expiration date in the file meta data which is used as a control mechanism by which a tape management subsystem can determine whether a particular space on a tape can be rewritten with new data. However, in conventional tape systems, expired data from a “scratched” tape volume is not actually deleted from the tape until a user actually writes new data to the tape. In other words, conventional tape systems conveniently provide a “safety net” for users who decide they still wish to be able to retrieve data from storage even though the data may be past the original expiration date.
  • [0006]
    Because conventional tape systems have proven to be quite inefficient in data storage space utilization, a virtual tape system has been developed which significantly improves storage space utilization and control by incorporating the advantages of an intermediate disk buffer as part of a tape emulation arrangement. Such an arrangement is taught in commonly owned copending U.S. patent application Ser. No. 09/110,217, filed on Jul. 6, 1998, now U.S. Pat. No. 6,094,605, and incorporated by reference herein.
  • [0007]
    More specifically, in the referenced virtual tape system, a disk buffer is connected between remote users and the tape storage devices and arranged to appear to users as though it were a physical tape device. All data volumes are initially stored in the disk buffer, and subsequently written to a physical tape device using predetermined protocols which limit the occurrence of unusable dead spaces on the tapes while also improving the ability to reclaim any fragmented space which does occur. In such a virtual tape system, a user reads and writes only to the disk buffer, but believes they are reading and writing to an actual physical tape device.
  • [0008]
    While efficiency in space management and utilization are significantly improved with the virtual tape system, users also lose the above-noted safety net feature inherently provided by conventional tape systems. More specifically, to achieve higher efficiency, the virtual tape system operates to automatically reutilize any tape and disk buffer space occupied by expired data without user action, i.e., a user does not have exclusive monopoly of a particular tape like in a conventional tape system because the tape can be reused any time a new data volume is received into the disk buffer. Emulating the safety net feature in the virtual tape system would involve prohibiting the reuse of any tape space until a user reuses a corresponding virtual tape volume name for the data volume stored in the space irrespective of whether the corresponding data has expired.
  • [0009]
    However, such an arrangement reintroduces significant inefficiency in storage space utilization and reclamation, thereby defeating a main advantage of the virtual tape system. As a result, a need exists for an improved method of controlling reutilization of data space in a virtual tape system which can provide a safety net for users while also minimizing the impact of such a feature on efficiency of data storage space utilization and management.
  • [0010]
    Generally, conventional automated cartridge systems (ACS) allow multiple users in a data processing system common access to multiple data storage subsystems. However, due to the operational nature of the data storage subsystems, conventional ACS arrangements can only provide such common access via a serial access data control.
  • [0011]
    More specifically, whenever a user is performing a task which may require need of a storage/tape device, the user sends a request to a host computer control system. Upon receipt of such a request, the operating system must grab the storage device and allocate the device to the requesting user for the duration of the entire task irrespective of the amount of use actually made by the user.
  • [0012]
    Because such user monopolization denies allocation requests from other users while a resource is already allocated, storage device allocation and use in conventional ACS arrangements is highly inefficient. This in turn significantly lowers throughput capability of systems which may otherwise be capable of high speed processing.
  • SUMMARY OF THE INVENTION
  • [0013]
    It is therefore an object of the present invention to provide an improved ACS and data storage device management method which does not require user monopolization of a storage device when allocating the device to a user.
  • [0014]
    It is another object of the present invention to provide an ACS and data storage device management method which provides an intermediary subsystem arranged to automatically emulate a storage device when allocated to a user, wherein the intermediary subsystem is arranged to allow multiple simultaneous user access/allocation of data storage capability.
  • [0015]
    It is still another object of the present invention to provide a virtual ACS and data storage device management method which operates as a temporary storage device while giving the appearance of a conventional “physical” storage device in an ACS to a requesting user.
  • [0016]
    It is still another object of the present invention to provide an ACS and data storage device management method which provides an intermediary subsystem arranged to automatically emulate a compatible storage device when allocated to a user, thereby allowing any type or format of physical storage to be used in conjunction with remote computer systems irrespective of compatibility.
  • [0017]
    In accordance with these and other objects, the present invention provides a virtual ACS and data storage device management method which incorporates a temporary data buffer arrangement between multiple user systems and any type of conventional physical data storage devices, wherein the temporary data buffer arrangement is arranged to emulate a physical data storage device when accessed by each of the user systems, while also allowing multiple users simultaneous access to read and write data to the temporary data buffer. The system includes a control processor arranged to periodically transfer any data in the temporary data buffer arrangement to one of the physical data storage devices.
  • [0018]
    In accordance with one aspect of the present invention, a virtual automated cartridge system is provided including a data storage manager having a first input/output connected to at least one remote user computer system, and a second input/output connected to at least one physical data storage device, and an interim data storage device connected to the data storage manager and arranged to emulate a physical data storage with respect to storing or retrieving data for the at least one remote user computer system. The data storage manager includes a processor operative to assign a portion of the interim data storage device to a user computer system upon receipt of a user request for allocation of a data storage device for a duration of time.
  • [0019]
    In accordance with another aspect of the present invention, a method for efficiently managing allocation of at least one physical data storage device in an automated cartridge system to competing remote user computer systems includes providing an interim data storage device which is arranged to emulate a physical data storage with respect to storing or retrieving data for a remote user computer system, and assigning a first portion of the interim data storage device in lieu of the at least one physical data storage device upon receiving a request from a remote user computer system for allocation of a data storage device for a duration of time.
  • [0020]
    These and other objects, features, and advantages of the present invention will be readily apparent from the following detailed description of the best mode for carrying out the invention when taken in connection with the accompanying drawings.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • [0021]
    FIG. 1 is a block diagram illustrating a virtual tape system utilizing selective deletion of data corresponding to a scratched virtual volume;
  • [0022]
    FIG. 2 is a flowchart showing the overall process;
  • [0023]
    FIG. 3 is a flowchart showing verification and deletion of designated data from a scratch virtual volume;
  • [0024]
    FIG. 4 is a block diagram of data storage management system in accordance with the present invention; and
  • [0025]
    FIG. 5 is a flow chart showing the virtual ACS process in accordance with the present invention.
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT(S)
  • [0026]
    A virtual tape system 10 includes a virtual tape control system 12 having a suitable control processor (not shown) for routing all data volume files received from remote users to a disk buffer 14. Virtual tape control system 12 is arranged to transfer data from disk buffer 14 to one or more multiple volume cartridges (MVC) 16 as virtual tape volumes (VTV). A map matching the MVC location with corresponding VTV names and all corresponding file meta data is maintained by the virtual tape control system 12. An external tape management system (TMS) 18 provides overall management of the use of virtual tapes used by virtual tape system 10.
  • [0027]
    Users can selectively tag or encode any desired data volume file to indicate that the tape and/or disk buffer space occupied by the corresponding virtual volume can be automatically reused either immediately after the expiration date or a predetermined period of time after the expiration date, i.e., a data deletion “grace period.” Otherwise, if the user does not expressly designate a data volume file, virtual tape control system 12 will be prohibited from deleting and reusing the space of an expired virtual volume until a user reuses the VTV name for a new file of data.
  • [0028]
    This process is summarized in the flow charts of FIGS. 2 and 3. As denoted at block 100, all data volume files are stored in the disk buffer, and analyzed at block 102 to determine whether or not the user has designated the corresponding data for immediate deletion at the expiration date, or alternatively after a predetermined or user defined grace period. At block 104, if the data has been designated, the appropriate identifying and mapping information are marked to indicate that the corresponding data can be immediately deleted at either the expiration date or the end of the predetermined grace period. Otherwise, at block 106 the virtual volume is stored in accordance with a default policy which will not allow the virtual tape control system to reuse the tape and disk space occupied by the virtual volume after scratching until that particular virtual volume name is actually reused by the user.
  • [0029]
    The flowchart of FIG. 3 illustrates an example of automatic deletion of data from a scratch VTV. A VTV which has been selected for scratch at block 108 is analyzed at block 110 to determine whether the VTV has been designated for automatic deletion. If automatic deletion has been identified, the data is deleted from the disk buffer at block 112 (if the data is disk buffer resident), and the MVC map is updated at block 114 to reflect the deletion of the data from the VTV and the space on the physical tape occupied by the virtual volume can be reused. After updating of the MVC map, or if the data had not been identified for automatic deletion at block 110, the virtual volume is marked as scratch at block 116 and therefore reusable. However, the VTV marked for scratch will still contain the data until the VTV is actually reused if the data was not deleted at block 112 or the MVC map was not updated at block 114.
  • [0030]
    While described as requiring the user to designate whether the data can be automatically deleted to allow bypassing of the default policy of prohibiting such automatic deletion in the absence of a designation, it will be appreciated that the reverse arrangement could be implemented if desired, i.e., the default policy could allow immediate scratched data deletion if an appropriate designation was not made by the user.
  • [0031]
    As noted above, the present application is a continuation of U.S. application Ser. No. 10/255,890, filed Sep. 26, 2002, now U.S. Pat. No. ______; which is a continuation of U.S. application Ser. No. 09/121,254, filed Jul. 23, 1998, now U.S. Pat. No. 6,094,605; which is a continuation-in-part of U.S. application Ser. No. 09/110,217, filed Jul. 6, 1998, now U.S. Pat. No. 6,094,605, which is itself incorporated by reference in the present application. The relevant portions of that disclosure are reproduced verbatim below, with only the Figure numbers and reference numerals changed to avoid confusion with FIGS. 1-3 above and the reference numerals used therein.
  • [0032]
    Referring to FIG. 4, a data storage management system 20 is shown having a plurality of user subsystems denoted for illustrative purposes as multiple virtual storage (MVS) type systems 22 and non-MVS type systems 24, each of which are conventional and well understood to one of ordinary skill in the art, connected to a storage manager 26 via respective data lines 28 and control lines 30. Storage manager 26 includes a suitable processor 32 programmed to provide the necessary control process to implement the “virtual” data storage of the present invention, and provides an intermediary data storage control point for a plurality of physical data storage devices represented as disk subsystems 34, tape subsystems 36, optical subsystems 38, and other types of data storage subsystems 40.
  • [0033]
    As further shown in FIG. 4, storage manager 26 also includes an interim/temporary data buffer storage device 42 which is utilized by storage manager 26 as a virtual disk or tape device when access to a physical storage subsystem is requested by a user. A request for access to a physical storage subsystem may be a request for one of the subsystems 34-40 actually used in system 20, however this is not a requirement because the use of a virtual disk in lieu of an actual physical storage media in accordance with the present invention allows storage manager 26 to receive user requests for any type of storage subsystem whether connected to system 20 or not. Interim data buffer storage device 42 can be implemented as a high speed buffer arrangement, such as using solid state memory, DASD or any other suitable data storage arrangement capable of multiple, simultaneous user access.
  • [0034]
    Overall operation of the virtual data storage management process of the present invention will now be described in connection with the flow chart of FIG. 5. More specifically, as denoted by decision block 200, processor 32 determines that a request has been received from a user seeking allocation of a physical storage subsystem. In response, processor 32 initially assigns at block 202 a portion of interim data buffer 42 for allocation to the requesting user. Upon set up, the allocated user will believe an actual physical storage subsystem device has been reserved, and will proceed to read and write data as indicated by the particular application currently being executed as indicated at block 204. As denoted by block 206, multiple users are queued and assigned different portions of interim data buffer 42. The assigned portions of interim data buffer 42 are arranged in accordance with known design principles to react like or emulate operation of a compatible data storage device, such as one of the actual physical data storage devices in subsystems 34-40.
  • [0035]
    Because the buffer is designed to emulate a storage device compatible with the user request as viewed by the remote user, compatibility between the remote user and the actual type or format of physical data storage device is not required. Thus, the present invention advantageously allows any type of physical storage device to be used or added as an upgrade to an existing system. The interim buffer management arrangement would be modified to include an appropriate translation arrangement to allow data to be transferred between the buffer and the actual type of storage device employed.
  • [0036]
    As denoted at block 208, all data of the virtual volume in the interim data buffer 42 associated with the file of interest is transferred to one of the storage subsystems in such situations as the end of a user's current allocation, a filling up of memory capability in buffer 42, or periodically as part of an overall housekeeping process.
  • [0037]
    In addition, after interim data has been transferred to one of the actual physical storage subsystems, such data can be later retrieved back into the interim buffer as a virtual volume when desired by the user. After retrieval, the storage manager 26 again causes the buffer to emulate the requested type of physical storage subsystem to make the retrieved data available to the user.
  • [0038]
    With such an arrangement, the present invention advantageously provides the illusion of a compatible tape or cartridge device, while further providing significantly improved data management flexibility and efficiency in data storage device use.
  • [0039]
    While the best mode for carrying out the invention has been described in detail, those familiar with the art to which this invention relates will recognize various alternative designs and embodiments for practicing the invention as defined by the following claims.

Claims (42)

1. A data storage management system comprising:
a physical storage device;
an interim storage device which acts as a virtual storage device of the physical storage device; and
a storage manager in communication with the interim storage device, a plurality of computers, and the physical storage device;
wherein the storage manager assigns a first interim storage device portion to one computer for a time duration in lieu of the physical storage device upon receipt of an allocation request from the one computer requesting allocation of data storage space on the physical storage device, and respectively assigns a different interim storage device portion to the other computers for a time duration in lieu of the physical storage device upon receipt of an allocation request, during the time duration in which the first interim storage device portion is assigned to the one computer, from the other computers requesting allocation of data storage space on the physical storage device such that the computers have simultaneous access to the interim storage device and the physical storage device is free from monopolization by the computers.
2. The system of claim 1 wherein:
the interim storage device stores data from the computers before the data is stored on the physical storage device.
3. The system of claim 2 wherein:
the storage manager transfers data stored in the interim storage device to the physical storage device.
4. The system of claim 1 wherein:
the computers request allocation of the same data storage space on the physical storage device when requesting allocation of data storage space on the physical storage device.
5. The system of claim 1 wherein:
the interim storage device portions emulate the physical storage device with respect to storing and retrieving data for the computers while being assigned to the computers in lieu of the physical storage device.
6. The system of claim 1 wherein:
the interim storage device includes a data storage arrangement which provides multiple computers with simultaneous access to the interim storage device.
7. A data storage management method comprising:
providing a storage manager in communication with a physical storage device, a plurality of computers, and an interim storage space which functions as a virtual storage space of the physical storage device, the storage manager operative to assign a first interim storage space portion to one computer for a time duration in lieu of the physical storage device upon receipt of an allocation request from the one computer requesting allocation of data storage space on the physical storage device, and operative to respectively assign a different interim storage space portion to the other computers for a time duration in lieu of the physical storage device upon receipt of an allocation request, during the time duration in which the first interim storage space portion is assigned to the one computer, from the other computers requesting allocation of data storage space on the physical storage device such that the computers have simultaneous access to the interim storage space and the physical storage device is free from monopolization by the computers.
8. The method of claim 7 wherein:
the storage manager is operative to store data from the computers in the interim storage space before the data is stored on the physical storage device.
9. The method of claim 8 wherein:
the storage manager is further operative to transfer data stored in the interim storage space to the physical storage device.
10. The method of claim 7 wherein:
the computers request allocation of the same data storage space on the physical storage device when requesting allocation of data storage space on the physical storage device.
11. The method of claim 7 wherein;
the interim storage space portions are arranged to emulate the physical storage device with respect to storing and retrieving data for the computers while being assigned to the computers in lieu of the physical storage device.
12. The method of claim 7 wherein:
the interim storage space includes a data storage arrangement which provides multiple computers with simultaneous access to the interim storage space.
13. A data storage management method comprising:
providing an interim storage device which acts as a virtual storage device of a physical storage device; and
providing a storage manager in communication with the interim storage device, a plurality of computers, and the physical storage device, the storage manager operative to assign a first interim storage device portion to one computer for a time duration in lieu of the physical storage device upon receipt of an allocation request from the one computer requesting allocation of data storage space on the physical storage device, and to respectively assign a different interim storage device portion to the other computers for a time duration in lieu of the physical storage device upon receipt of an allocation request, during the time duration in which the first interim storage device portion is assigned to the one computer, from the other computers requesting allocation of data storage space on the physical storage device such that the computers have simultaneous access to the interim storage device and the physical storage device is free from monopolization by the computers.
14. The method of claim 13 wherein:
the interim storage device is operative to store data from the computers before the data is stored on the physical storage device.
15. The method of claim 14 wherein:
the storage manager is operative to transfer data stored in the interim storage device to the physical storage device.
16. The method of claim 13 wherein:
the computers request allocation of the same data storage space on the physical storage device when requesting allocation of data storage space on the physical storage device.
17. The method of claim 13 wherein:
the interim storage device portions are arranged to emulate the physical storage device with respect to storing and retrieving data for the computers while being assigned to the computers in lieu of the physical storage device.
18. The method of claim 13 wherein;
the interim storage device includes a data storage arrangement which provides multiple computers with simultaneous access to the interim storage device.
19. A data storage management method comprising:
providing a storage subsystem in communication with a physical storage device and a plurality of computers, the storage subsystem including an interim storage space which functions as a virtual storage space of the physical storage device, the storage subsystem being operative to assign a first interim storage space portion to one computer for a time duration in lieu of the physical storage device upon receipt of an allocation request from the one computer requesting allocation of data storage space on the physical storage device, and to respectively assign a different interim storage space portion to the other computers for a time duration in lieu of the physical storage device upon receipt of an allocation request, during the time duration in which the first interim storage space portion is assigned to the one computer, from the other computers requesting allocation of data storage space on the physical storage device such that the computers have simultaneous access to the interim storage space and the physical storage device is free from monopolization by the computers.
20. The method of claim 19 wherein:
the storage subsystem is operative to store data from the computers in the interim storage space before the data is stored on the physical storage device.
21. The method of claim 20 wherein:
the storage subsystem is further operative to transfer data stored in the interim storage space to the physical storage device.
22. The method of claim 19 wherein:
the computers request allocation of the same data storage space on the physical storage device when requesting allocation of data storage space on the physical storage device.
23. The method of claim 19 wherein;
the interim storage space portions are arranged to emulate the physical storage device with respect to storing and retrieving data for the computers while being assigned to the computers in lieu of the physical storage device.
24. The method of claim 19 wherein:
the interim storage space includes a data storage arrangement which provides multiple computers with simultaneous access to the interim storage space.
25. A data storage management method comprising:
providing an interim storage device which acts as a virtual storage device of a physical storage device;
assigning a first interim storage device portion to one computer for a time duration in lieu of the physical storage device upon receipt of an allocation request from the one computer requesting allocation of data storage space on the physical storage device; and
respectively assigning a different interim storage device portion to other computers for a time duration in lieu of the physical storage device upon receipt of an allocation request, during the time duration in which the first interim storage device portion is assigned to the one computer, from the other computers requesting allocation of data storage space on the physical storage device such that the computers have simultaneous access to the interim storage device and the physical storage device is free from monopolization by the computers.
26. The method of claim 25 further comprising:
storing the data from the computers in the interim storage device stores data before storing the data on the physical storage device.
27. The method of claim 26 further comprising:
transferring data stored in the interim storage device to the physical storage device.
28. The method of claim 25 wherein:
the computers request allocation of the same data storage space on the physical storage device when requesting allocation of data storage space on the physical storage device.
29. The method of claim 25 wherein:
the interim storage device portions emulate the physical storage device with respect to storing and retrieving data for the computers while being assigned to the computers in lieu of the physical storage device.
30. The method of claim 25 wherein:
the interim storage device includes a data storage arrangement which provides multiple computers with simultaneous access to the interim storage device.
31. A data storage management system comprising:
an interim storage device which virtually acts as a physical storage device to a plurality of computers;
a storage manager in communication with the interim storage device and the computers;
wherein the storage manager assigns a first interim storage device portion to one computer for a time duration in lieu of the physical storage device upon receipt of an allocation request from the one computer requesting allocation of data storage space on the physical storage device, and respectively assigns a different interim storage device portion to the other computers for a time duration in lieu of the physical storage device upon receipt of an allocation request, during the time duration in which the first interim storage device portion is assigned to the one computer, from the other computers requesting allocation of data storage space on the physical storage device such that the interim storage device virtually provides the computers with simultaneous access to the physical storage device.
32. The system of claim 31 wherein:
the interim storage device stores data from the computers for subsequent storage the physical storage device.
33. The system of claim 32 wherein:
the storage manager transfers data stored in the interim storage device to the physical storage device.
34. The system of claim 31 wherein:
the computers request allocation of the same data storage space on the physical storage device when requesting allocation of data storage space on the physical storage device.
35. The system of claim 31 wherein:
the interim storage device portions emulate the physical storage device with respect to storing and retrieving data for the computers while being assigned to the computers in lieu of the physical storage device.
36. The system of claim 31 wherein:
the interim storage device includes a data storage arrangement which provides multiple computers with simultaneous access to the interim storage device.
37. The system of claim 31 wherein:
the interim storage device virtually acts as the physical storage device to the plurality of computers using mapping.
38. A method for selectively controlling reutilization of data space in a virtual tape system having a buffer and at least one multiple volume tape cartridge, the method comprising:
a user transferring data volume files to the virtual tape system for the virtual tape system to store;
the buffer receiving the data volume files transferred by the remote user and then transferring the data making up the data volume files as virtual tape volumes to different locations of the at least one multiple volume tape cartridge for the at least one multiple volume tape cartridge to store;
the user selectively designating a particular data volume file for the virtual tape system to automatically delete from storage after a predetermined expiration date included as part of the data volume file has elapsed by automatically deleting the virtual tape volumes corresponding to the particular data volume file designated for automatic deletion from the at least one multiple volume tape cartridge, in order to allow the virtual tape system to automatically reuse the storage space of the at least one multiple volume tape cartridge corresponding to the deleted virtual tape volumes of the particular data volume file designated for automatic deletion without any further action by the user;
detecting if a data volume file received by the buffer and transferred by the buffer as virtual tape volumes to the at least one multiple tape volume for storage has been designated by the user for automatic deletion; and
prohibiting the virtual tape system from automatically deleting the received data volume file from storage after a predetermined expiration date included as part of the received data volume file has elapsed if the received data volume file was not designated by the user for automatic deletion; and
allowing the virtual tape system to delete the received data volume file from storage after the predetermined expiration time associated with the received data volume file has expired if the received data volume file was not designated by the user for automatic deletion.
39. The method of claim 38 wherein:
the user selectively tags a particular data volume file before originally transferring to the virtual tape system to indicate that the data volume file is to be automatically deleted.
40. The method of claim 38 wherein:
if a user has designated a particular data volume file for automatic deletion, determining that the expiration date has passed, and marking the space on a data storage media occupied by the data corresponding to the data volume file to indicate the space can be automatically reused when desired.
41. The method of claim 38 wherein:
if automatic deletion has been designated, deleting a particular data volume space only after predetermined period of time has passed after the data volume file expiration date.
42. The method of claim 38 further comprising:
determining that the predetermined period of time has passed, and marking the space on a data storage media occupied by the data corresponding to the data volume file to indicate the space can be automatically reused when desired.
US11130940 1998-07-06 2005-05-17 Data storage management system and method Abandoned US20050207235A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US09110217 US6094605A (en) 1998-07-06 1998-07-06 Virtual automated cartridge system
US09121254 US6789161B1 (en) 1998-07-06 1998-07-23 Method for controlling reutilization of data space in virtual tape system
US10255890 US6925525B2 (en) 1998-07-06 2002-09-26 Data storage management system and method
US11130940 US20050207235A1 (en) 1998-07-06 2005-05-17 Data storage management system and method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11130940 US20050207235A1 (en) 1998-07-06 2005-05-17 Data storage management system and method
US12144742 US7873781B2 (en) 1998-07-06 2008-06-24 Data storage management method for selectively controlling reutilization of space in a virtual tape system

Publications (1)

Publication Number Publication Date
US20050207235A1 true true US20050207235A1 (en) 2005-09-22

Family

ID=22331836

Family Applications (5)

Application Number Title Priority Date Filing Date
US09110217 Active US6094605A (en) 1998-07-06 1998-07-06 Virtual automated cartridge system
US09121254 Active 2020-06-26 US6789161B1 (en) 1998-07-06 1998-07-23 Method for controlling reutilization of data space in virtual tape system
US10255890 Active US6925525B2 (en) 1998-07-06 2002-09-26 Data storage management system and method
US11130940 Abandoned US20050207235A1 (en) 1998-07-06 2005-05-17 Data storage management system and method
US12144742 Active 2019-01-03 US7873781B2 (en) 1998-07-06 2008-06-24 Data storage management method for selectively controlling reutilization of space in a virtual tape system

Family Applications Before (3)

Application Number Title Priority Date Filing Date
US09110217 Active US6094605A (en) 1998-07-06 1998-07-06 Virtual automated cartridge system
US09121254 Active 2020-06-26 US6789161B1 (en) 1998-07-06 1998-07-23 Method for controlling reutilization of data space in virtual tape system
US10255890 Active US6925525B2 (en) 1998-07-06 2002-09-26 Data storage management system and method

Family Applications After (1)

Application Number Title Priority Date Filing Date
US12144742 Active 2019-01-03 US7873781B2 (en) 1998-07-06 2008-06-24 Data storage management method for selectively controlling reutilization of space in a virtual tape system

Country Status (4)

Country Link
US (5) US6094605A (en)
JP (1) JP2002520696A (en)
EP (1) EP1093620A4 (en)
WO (1) WO2000002139A1 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030147361A1 (en) * 2000-09-01 2003-08-07 Ryota Tsukidate Reception terminal simulator, sending schedule making device, reception terminal, data transmission/reception system comprising them
US20060015507A1 (en) * 2004-07-17 2006-01-19 Butterworth Henry E Controlling data consistency guarantees in storage apparatus
WO2008061892A1 (en) * 2006-11-22 2008-05-29 International Business Machines Corporation Apparatus and method for resource reclamation in data storage systems
US20100030957A1 (en) * 2008-07-30 2010-02-04 Fujitsu Limited Virtual tape system
US8145861B1 (en) * 2005-10-17 2012-03-27 Unisys Corporation Managing data transfer between different types of tape media with encryption
US20120102279A1 (en) * 2010-10-20 2012-04-26 International Business Machines Corporation Preserving a deleted data volume
US20120179868A1 (en) * 2011-01-12 2012-07-12 International Business Machines Corporation Autonomic reclamation processing for tapes
US20130173859A1 (en) * 2011-12-30 2013-07-04 Oracle International Corporation Logically Partitioning Remote Virtual Library Extensions for Use in Disaster Recovery of Production Data
US9104629B2 (en) 2009-07-09 2015-08-11 International Business Machines Corporation Autonomic reclamation processing on sequential storage media

Families Citing this family (95)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7581077B2 (en) 1997-10-30 2009-08-25 Commvault Systems, Inc. Method and system for transferring data in a storage operation
US6418478B1 (en) 1997-10-30 2002-07-09 Commvault Systems, Inc. Pipelined high speed data transfer mechanism
US6094605A (en) * 1998-07-06 2000-07-25 Storage Technology Corporation Virtual automated cartridge system
EP1192676A1 (en) * 1999-06-21 2002-04-03 Cambridge University Technical Services Limited Aligned polymers for an organic tft
US7035880B1 (en) 1999-07-14 2006-04-25 Commvault Systems, Inc. Modular backup and retrieval system used in conjunction with a storage area network
US7395282B1 (en) 1999-07-15 2008-07-01 Commvault Systems, Inc. Hierarchical backup and retrieval system
US7389311B1 (en) 1999-07-15 2008-06-17 Commvault Systems, Inc. Modular backup and retrieval system
US6842841B1 (en) * 1999-09-21 2005-01-11 Storage Technology Corporation Method and system for dynamically selecting tape drives to connect with host computers
US6338006B1 (en) * 1999-12-11 2002-01-08 International Business Machines Corporation Data storage library with efficient cartridge eject
US7155481B2 (en) 2000-01-31 2006-12-26 Commvault Systems, Inc. Email attachment management in a computer system
US6658436B2 (en) 2000-01-31 2003-12-02 Commvault Systems, Inc. Logical view and access to data managed by a modular data and storage management system
US7003641B2 (en) 2000-01-31 2006-02-21 Commvault Systems, Inc. Logical view with granular access to exchange data managed by a modular data and storage management system
US6594677B2 (en) 2000-12-22 2003-07-15 Simdesk Technologies, Inc. Virtual tape storage system and method
US20020087624A1 (en) * 2000-12-28 2002-07-04 Gateway, Inc. Method and device for temporarily storing data
US20020188592A1 (en) * 2001-06-11 2002-12-12 Storage Technology Corporation Outboard data storage management system and method
US6857050B2 (en) * 2002-06-10 2005-02-15 Sun Microsystemes, Inc. Data storage system using 3-party hand-off protocol to maintain a single coherent logical image
US7130970B2 (en) 2002-09-09 2006-10-31 Commvault Systems, Inc. Dynamic storage device pooling in a computer system
WO2004025483A1 (en) 2002-09-16 2004-03-25 Commvault Systems, Inc. System and method for optimizing storage operations
US7643983B2 (en) * 2003-03-28 2010-01-05 Hewlett-Packard Development Company, L.P. Data storage system emulation
WO2004090789A3 (en) * 2003-04-03 2005-02-03 Commvault Systems Inc System and method for extended media retention
US7174433B2 (en) 2003-04-03 2007-02-06 Commvault Systems, Inc. System and method for dynamically sharing media in a computer network
US7454569B2 (en) 2003-06-25 2008-11-18 Commvault Systems, Inc. Hierarchical system and method for performing storage operations in a computer network
US20050108486A1 (en) * 2003-08-05 2005-05-19 Miklos Sandorfi Emulated storage system supporting instant volume restore
US20050193235A1 (en) * 2003-08-05 2005-09-01 Miklos Sandorfi Emulated storage system
US8938595B2 (en) * 2003-08-05 2015-01-20 Sepaton, Inc. Emulated storage system
US7146476B2 (en) * 2003-08-05 2006-12-05 Sepaton, Inc. Emulated storage system
US7539707B2 (en) 2003-11-13 2009-05-26 Commvault Systems, Inc. System and method for performing an image level snapshot and for restoring partial volume data
WO2005065084A3 (en) 2003-11-13 2007-01-25 Commvault Systems Inc System and method for providing encryption in pipelined storage operations in a storage network
WO2005050381B1 (en) 2003-11-13 2006-05-11 Anand Prahlad Systems and methods for performing storage operations using network attached storage
US7861274B2 (en) 2004-01-13 2010-12-28 Time Warner Cable, Inc. System and method for managing program assets
JP2005301684A (en) * 2004-04-12 2005-10-27 Hitachi Ltd Storage system
US8108599B2 (en) * 2004-11-03 2012-01-31 Spectra Logic Corporation Erasure techniques for emulating streamed data format for non tape media
CA2587055A1 (en) 2004-11-05 2006-05-18 Commvault Systems, Inc. Method and system of pooling storage devices
US7536291B1 (en) 2004-11-08 2009-05-19 Commvault Systems, Inc. System and method to support simulated storage operations
US7254672B1 (en) 2004-12-30 2007-08-07 Storage Technology Corporation Translation device driver for translating between disk device driver and tape device driver commands
US7167326B1 (en) 2004-12-30 2007-01-23 Storage Technology Corporation Tape drive that supports update-in-place
JP4210662B2 (en) * 2005-03-17 2009-01-21 本田技研工業株式会社 Object detecting apparatus for a vehicle
US7636743B2 (en) 2005-12-19 2009-12-22 Commvault Systems, Inc. Pathname translation in a data replication system
US7651593B2 (en) 2005-12-19 2010-01-26 Commvault Systems, Inc. Systems and methods for performing data replication
US7606844B2 (en) 2005-12-19 2009-10-20 Commvault Systems, Inc. System and method for performing replication copy storage operations
US8655850B2 (en) 2005-12-19 2014-02-18 Commvault Systems, Inc. Systems and methods for resynchronizing information
US7962709B2 (en) 2005-12-19 2011-06-14 Commvault Systems, Inc. Network redirector systems and methods for performing data replication
US7603518B2 (en) 2005-12-19 2009-10-13 Commvault Systems, Inc. System and method for improved media identification in a storage device
US7617262B2 (en) 2005-12-19 2009-11-10 Commvault Systems, Inc. Systems and methods for monitoring application data in a data replication system
US7870355B2 (en) 2005-12-19 2011-01-11 Commvault Systems, Inc. Log based data replication system with disk swapping below a predetermined rate
JP5230068B2 (en) * 2006-01-13 2013-07-10 オムロンオートモーティブエレクトロニクス株式会社 The inverter device
US8438346B2 (en) * 2006-04-27 2013-05-07 Hewlett-Packard Development Company, L.P. Synchronization of a virtual storage system and an actual storage system
JP2007323321A (en) * 2006-05-31 2007-12-13 Toshiba Corp Semiconductor storage device and its data transmission method
US8726242B2 (en) 2006-07-27 2014-05-13 Commvault Systems, Inc. Systems and methods for continuous data replication
US7539783B2 (en) 2006-09-22 2009-05-26 Commvault Systems, Inc. Systems and methods of media management, such as management of media to and from a media storage library, including removable media
US7756831B1 (en) 2006-09-28 2010-07-13 Emc Corporation Cooperative locking between multiple independent owners of data space
US7587431B1 (en) 2006-09-28 2009-09-08 Emc Corporation Updating snapshots
US9454536B1 (en) * 2006-09-28 2016-09-27 Emc Corporation Space compaction and defragmentation mechanisms in data space
US7647466B1 (en) 2006-09-28 2010-01-12 Emc Corporation Linear space allocation mechanisms in data space
US8862639B1 (en) 2006-09-28 2014-10-14 Emc Corporation Locking allocated data space
US7594085B1 (en) 2006-09-28 2009-09-22 Emc Corporation Reclaiming data space
US8533158B1 (en) 2006-09-28 2013-09-10 Emc Corporation Reclaiming data space by rewriting metadata
US7526623B1 (en) 2006-09-28 2009-04-28 Emc Corporation Optimizing reclamation of data space
US8312323B2 (en) 2006-12-22 2012-11-13 Commvault Systems, Inc. Systems and methods for remote monitoring in a computer network and reporting a failed migration operation without accessing the data being moved
US8719809B2 (en) 2006-12-22 2014-05-06 Commvault Systems, Inc. Point in time rollback and un-installation of software
US8346733B2 (en) 2006-12-22 2013-01-01 Commvault Systems, Inc. Systems and methods of media management, such as management of media to and from a media storage library
US7831566B2 (en) 2006-12-22 2010-11-09 Commvault Systems, Inc. Systems and methods of hierarchical storage management, such as global management of storage operations
JP5042660B2 (en) * 2007-02-15 2012-10-03 株式会社日立製作所 Storage system
JP4331220B2 (en) * 2007-03-07 2009-09-16 東芝ソリューション株式会社 A storage device having unused physical area autonomic management functions
US8290808B2 (en) 2007-03-09 2012-10-16 Commvault Systems, Inc. System and method for automating customer-validated statement of work for a data storage environment
US8706976B2 (en) 2007-08-30 2014-04-22 Commvault Systems, Inc. Parallel access virtual tape library and drives
US9495382B2 (en) 2008-12-10 2016-11-15 Commvault Systems, Inc. Systems and methods for performing discrete data replication
US8204859B2 (en) 2008-12-10 2012-06-19 Commvault Systems, Inc. Systems and methods for managing replicated database data
US8645641B2 (en) * 2008-12-17 2014-02-04 Seagate Technology Llc Intelligent storage device controller
US9323473B2 (en) * 2009-01-09 2016-04-26 Hewlett Packard Enterprise Development Lp Virtual tape library
DE112010004573T5 (en) 2009-11-27 2012-11-22 International Business Machines Corp. System and method for the optimized reclamation processing in a virtual tape library system
US8504517B2 (en) 2010-03-29 2013-08-06 Commvault Systems, Inc. Systems and methods for selective data replication
US8504515B2 (en) 2010-03-30 2013-08-06 Commvault Systems, Inc. Stubbing systems and methods in a data replication environment
US8725698B2 (en) 2010-03-30 2014-05-13 Commvault Systems, Inc. Stub file prioritization in a data replication system
US8352422B2 (en) 2010-03-30 2013-01-08 Commvault Systems, Inc. Data restore systems and methods in a replication environment
US8572038B2 (en) 2010-05-28 2013-10-29 Commvault Systems, Inc. Systems and methods for performing data replication
US9244779B2 (en) 2010-09-30 2016-01-26 Commvault Systems, Inc. Data recovery operations, such as recovery from modified network data management protocol data
US9021198B1 (en) 2011-01-20 2015-04-28 Commvault Systems, Inc. System and method for sharing SAN storage
US9298715B2 (en) 2012-03-07 2016-03-29 Commvault Systems, Inc. Data storage system utilizing proxy device for storage operations
US9471578B2 (en) 2012-03-07 2016-10-18 Commvault Systems, Inc. Data storage system utilizing proxy device for storage operations
US9529871B2 (en) 2012-03-30 2016-12-27 Commvault Systems, Inc. Information management of mobile device data
US9342537B2 (en) 2012-04-23 2016-05-17 Commvault Systems, Inc. Integrated snapshot interface for a data storage system
US20130339310A1 (en) 2012-06-13 2013-12-19 Commvault Systems, Inc. Restore using a client side signature repository in a networked storage system
US9336223B2 (en) 2012-09-24 2016-05-10 International Business Machines Corporation Selective erasure of expired files or extents in deduplicating virtual media for efficient file reclamation
CN103034592B (en) * 2012-12-05 2016-09-28 华为技术有限公司 Data processing method and apparatus
US9069799B2 (en) 2012-12-27 2015-06-30 Commvault Systems, Inc. Restoration of centralized data storage manager, such as data storage manager in a hierarchical data storage system
US9262435B2 (en) 2013-01-11 2016-02-16 Commvault Systems, Inc. Location-based data synchronization management
US9753812B2 (en) 2014-01-24 2017-09-05 Commvault Systems, Inc. Generating mapping information for single snapshot for multiple applications
US9632874B2 (en) 2014-01-24 2017-04-25 Commvault Systems, Inc. Database application backup in single snapshot for multiple applications
US9495251B2 (en) 2014-01-24 2016-11-15 Commvault Systems, Inc. Snapshot readiness checking and reporting
US9639426B2 (en) 2014-01-24 2017-05-02 Commvault Systems, Inc. Single snapshot for multiple applications
US9774672B2 (en) 2014-09-03 2017-09-26 Commvault Systems, Inc. Consolidated processing of storage-array commands by a snapshot-control media agent
JP5954751B2 (en) * 2014-09-29 2016-07-20 インターナショナル・ビジネス・マシーンズ・コーポレーションInternational Business Machines Corporation How to roll back the data on the tape and the file system
US9648105B2 (en) 2014-11-14 2017-05-09 Commvault Systems, Inc. Unified snapshot storage management, using an enhanced storage manager and enhanced media agents
US9448731B2 (en) 2014-11-14 2016-09-20 Commvault Systems, Inc. Unified snapshot storage management

Citations (75)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3130387A (en) * 1958-02-06 1964-04-21 Int Standard Electric Corp Buffer system for transferring data between two asynchronous data stores
US3292153A (en) * 1962-10-01 1966-12-13 Burroughs Corp Memory system
US3699533A (en) * 1970-10-29 1972-10-17 Rca Corp Memory system including buffer memories
US3806888A (en) * 1972-12-04 1974-04-23 Ibm Hierarchial memory system
US3909799A (en) * 1973-12-18 1975-09-30 Honeywell Inf Systems Microprogrammable peripheral processing system
US3928857A (en) * 1973-08-30 1975-12-23 Ibm Instruction fetch apparatus with combined look-ahead and look-behind capability
US3936804A (en) * 1973-12-13 1976-02-03 Honeywell Information Systems, Inc. Data processing system incorporating a logical move instruction
US3949377A (en) * 1974-09-03 1976-04-06 Ultronic Systems Corporation Data storage and processing apparatus including processing of spacer characters
US3949379A (en) * 1973-07-19 1976-04-06 International Computers Limited Pipeline data processing apparatus with high speed slave store
US3976977A (en) * 1975-03-26 1976-08-24 Honeywell Information Systems, Inc. Processor for input-output processing system
US4021782A (en) * 1974-01-07 1977-05-03 Hoerning John S Data compaction system and apparatus
US4035778A (en) * 1975-11-17 1977-07-12 International Business Machines Corporation Apparatus for assigning space in a working memory as a function of the history of usage
US4040026A (en) * 1974-05-08 1977-08-02 Francois Gernelle Channel for exchanging information between a computer and rapid peripheral units
US4054951A (en) * 1976-06-30 1977-10-18 International Business Machines Corporation Data expansion apparatus
US4077059A (en) * 1975-12-18 1978-02-28 Cordi Vincent A Multi-processing system with a hierarchial memory having journaling and copyback
US4080652A (en) * 1977-02-17 1978-03-21 Xerox Corporation Data processing system
US4080651A (en) * 1977-02-17 1978-03-21 Xerox Corporation Memory control processor
US4084228A (en) * 1973-11-30 1978-04-11 Compagnie Honeywell Bull Process management structures and hardware/firmware control
US4084234A (en) * 1977-02-17 1978-04-11 Honeywell Information Systems Inc. Cache write capacity
US4086629A (en) * 1975-07-09 1978-04-25 International Computers Limited Hierarchical data store with look-ahead action
US4091455A (en) * 1976-12-20 1978-05-23 Honeywell Information Systems Inc. Input/output maintenance access apparatus
US4096567A (en) * 1976-08-13 1978-06-20 Millard William H Information storage facility with multiple level processors
US4110823A (en) * 1977-02-17 1978-08-29 Xerox Corporation Soft display word processing system with multiple autonomous processors
US4123795A (en) * 1971-09-07 1978-10-31 Texas Instruments Incorporated Control system for a stored program multiprocessor computer
US4126894A (en) * 1977-02-17 1978-11-21 Xerox Corporation Memory overlay linking system
US4158235A (en) * 1977-04-18 1979-06-12 Burroughs Corporation Multi port time-shared associative buffer storage pool
US4189770A (en) * 1978-03-16 1980-02-19 International Business Machines Corporation Cache bypass control for operand fetches
US4215400A (en) * 1976-11-17 1980-07-29 Tokyo Shibaura Electric Co. Ltd. Disk address controller
US4228501A (en) * 1978-06-21 1980-10-14 Data General Corporation Data transfer technique for use with peripheral storage devices
US4241420A (en) * 1978-11-01 1980-12-23 Bank Computer Network Corporation Disk data control
US4246637A (en) * 1978-06-26 1981-01-20 International Business Machines Corporation Data processor input/output controller
US4276595A (en) * 1978-06-30 1981-06-30 International Business Machines Corporation Microinstruction storage units employing partial address generators
US4298932A (en) * 1979-06-11 1981-11-03 International Business Machines Corporation Serial storage subsystem for a data processor
US4310883A (en) * 1978-02-13 1982-01-12 International Business Machines Corporation Method and apparatus for assigning data sets to virtual volumes in a mass store
US4318184A (en) * 1978-09-05 1982-03-02 Millett Ronald P Information storage and retrieval system and method
US4327408A (en) * 1979-04-17 1982-04-27 Data General Corporation Controller device with diagnostic capability for use in interfacing a central processing unit with a peripheral storage device
US4412285A (en) * 1981-04-01 1983-10-25 Teradata Corporation Multiprocessor intercommunication system and method
US4414644A (en) * 1981-04-03 1983-11-08 International Business Machines Corporation Method and apparatus for discarding data from a buffer after reading such data
US4467421A (en) * 1979-10-18 1984-08-21 Storage Technology Corporation Virtual storage system and method
US4533995A (en) * 1981-08-03 1985-08-06 International Business Machines Corporation Method and system for handling sequential data in a hierarchical store
US4792898A (en) * 1986-09-26 1988-12-20 Mccarthy Donald F Method and apparatus for temporarily storing multiple data records
US5164909A (en) * 1990-11-21 1992-11-17 Storage Technology Corporation Virtual robot for a multimedia automated cartridge library system
US5287459A (en) * 1991-10-03 1994-02-15 International Business Machines Corporation Method and apparatus for reducing response time in automated library data retrieval systems
US5313617A (en) * 1990-03-19 1994-05-17 Hitachi, Ltd. Multi-disc optical data storage system for use with a host computer for emulating a magnetic disc device
US5317728A (en) * 1990-09-07 1994-05-31 International Business Machines Corporation Storage management of a first file system using a second file system containing surrogate files and catalog management information
US5327535A (en) * 1991-08-29 1994-07-05 Hitachi, Ltd. Magnetic recording control apparatus
US5388260A (en) * 1990-05-21 1995-02-07 International Business Machines Corporation Transparent library management
US5455926A (en) * 1988-04-05 1995-10-03 Data/Ware Development, Inc. Virtual addressing of optical storage media as magnetic tape equivalents
US5548724A (en) * 1993-03-22 1996-08-20 Hitachi, Ltd. File server system and file access control method of the same
US5566315A (en) * 1994-12-30 1996-10-15 Storage Technology Corporation Process of predicting and controlling the use of cache memory in a computer system
US5613155A (en) * 1995-06-07 1997-03-18 International Business Machines Corporation Bundling client write requests in a server
US5623669A (en) * 1993-07-21 1997-04-22 International Business Machines Corporation High speed online copy of partitioned data
US5742789A (en) * 1995-12-28 1998-04-21 Emc Corporation Dynamically adaptive data retrieval for a disk drive storage system
US5752268A (en) * 1995-06-19 1998-05-12 Kabushiki Kaisha Toshiba Minimum-delay recoverable disk control system using checkpoints and nonvolatile memory
US5793714A (en) * 1995-05-31 1998-08-11 Fujitsu Limited Optical disk library apparatus of desk-top type
US5805538A (en) * 1995-11-17 1998-09-08 Matsushita Electric Industrial Co., Ltd. Method for reproducing multiple optical recording medium without interruption
US5805864A (en) * 1996-09-10 1998-09-08 International Business Machines Corporation Virtual integrated cartridge loader for virtual tape storage system
US5829045A (en) * 1994-10-28 1998-10-27 Fujitsu Limited Apparatus for restoring/copying the contents recorded in a storage medium to an auxiliary storage including partitions having independent file structures
US5926834A (en) * 1997-05-29 1999-07-20 International Business Machines Corporation Virtual data storage system with an overrun-resistant cache using an adaptive throttle based upon the amount of cache free space
US5926649A (en) * 1996-10-23 1999-07-20 Industrial Technology Research Institute Media server for storage and retrieval of voluminous multimedia data
US5953350A (en) * 1995-03-13 1999-09-14 Selsius Systems, Inc. Multimedia client for multimedia/hybrid network
US5960451A (en) * 1997-09-16 1999-09-28 Hewlett-Packard Company System and method for reporting available capacity in a data storage system with variable consumption characteristics
US6049848A (en) * 1998-07-15 2000-04-11 Sutmyn Storage Corporation System and method for performing high-speed tape positioning operations
US6052765A (en) * 1998-04-21 2000-04-18 Storage Technology Corporation Method for optimized placement of virtual volumes on a physical cartridge
US6067587A (en) * 1998-06-17 2000-05-23 Sutmyn Storage Corporation Method for serializing and synchronizing data packets by utilizing a physical lock system and a control data structure for mutual exclusion lock
US6151666A (en) * 1998-05-27 2000-11-21 Storage Technology Corporation Method for reclaiming fragmented space on a physical data storage cartridge
USRE36989E (en) * 1979-10-18 2000-12-12 Storage Technology Corporation Virtual storage system and method
US6173359B1 (en) * 1997-08-27 2001-01-09 International Business Machines Corp. Storage and access to scratch mounts in VTS system
US6269464B1 (en) * 1997-06-18 2001-07-31 Sutmyn Storage Corporation Error checking technique for use in mass storage systems
US6289425B1 (en) * 1998-07-01 2001-09-11 Storage Technology Corporation Method for verifying availability of data space in virtual tape system
US6298386B1 (en) * 1996-08-14 2001-10-02 Emc Corporation Network file server having a message collector queue for connection and connectionless oriented protocols
US6317814B1 (en) * 1998-07-01 2001-11-13 Storage Technology Corporation Method for selectively storing redundant copies of virtual volume data on physical data storage cartridges
US6324497B1 (en) * 1998-07-15 2001-11-27 Sutmyn Storage Corporation Tape drive emulation system including tape library interface
US6330621B1 (en) * 1999-01-15 2001-12-11 Storage Technology Corporation Intelligent data storage manager
US6789161B1 (en) * 1998-07-06 2004-09-07 Storage Technology Corporation Method for controlling reutilization of data space in virtual tape system

Family Cites Families (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA892798A (en) 1972-02-08 F. Smith Perrin Data storage method and apparatus
US3406380A (en) 1965-11-26 1968-10-15 Burroughs Corp Input-output data service computer
US3723973A (en) 1970-09-30 1973-03-27 Honeywell Inf Systems Data communication controller having dual scanning
US3654617A (en) 1970-10-01 1972-04-04 Ibm Microprogrammable i/o controller
US3909800A (en) 1973-12-18 1975-09-30 Honeywell Inf Systems Improved microprogrammed peripheral processing system
JPS5118409A (en) 1974-08-07 1976-02-14 Hitachi Ltd Deetashinshukutensosochi
JPS52106641A (en) 1976-03-05 1977-09-07 Hitachi Ltd Data record storage for high-speed sequential access
JPS573967B2 (en) 1976-08-13 1982-01-23
US4075686A (en) 1976-12-30 1978-02-21 Honeywell Information Systems Inc. Input/output cache system including bypass capability
JPS5398741A (en) 1977-02-08 1978-08-29 Nec Corp High level recording and processing system
JPS5918747B2 (en) 1979-04-24 1984-04-28 Fujitsu Ltd
US4276927A (en) 1979-06-04 1981-07-07 The Trane Company Plate type heat exchanger
NL8004884A (en) 1979-10-18 1981-04-22 Storage Technology Corp Virtual system and method for storing data.
US5247649A (en) * 1988-05-06 1993-09-21 Hitachi, Ltd. Multi-processor system having a multi-port cache memory
JPH03219345A (en) * 1990-01-25 1991-09-26 Toshiba Corp Multiport cache memory control device
CA2044689A1 (en) * 1990-06-15 1991-12-16 Roger E. Tipley Multilevel inclusion in multilevel cache hierarchies
JP2818687B2 (en) 1990-06-18 1998-10-30 古河電気工業株式会社 Fuse array inspection apparatus
US5359723A (en) * 1991-12-16 1994-10-25 Intel Corporation Cache memory hierarchy having a large write through first level that allocates for CPU read misses only and a small write back second level that allocates for CPU write misses only
JPH05307441A (en) 1992-04-30 1993-11-19 Nec Corp Data access system
US5265159A (en) * 1992-06-23 1993-11-23 Hughes Aircraft Company Secure file erasure
US5513156A (en) * 1993-07-23 1996-04-30 Fujitsu Limited Library apparatus
JPH0756815A (en) * 1993-07-28 1995-03-03 Internatl Business Mach Corp <Ibm> Method for operating cache, and cache
JP3248176B2 (en) 1994-05-11 2002-01-21 日本電信電話株式会社 Library system
JPH08328761A (en) 1995-05-31 1996-12-13 Fujitsu Ltd Optical disk library device
US5829046A (en) * 1995-10-27 1998-10-27 Emc Corporation On-line tape backup using an integrated cached disk array
EP0886971B1 (en) * 1996-12-23 2004-10-27 Philips Electronics N.V. Method and system for supplying data streams
EP0863439B1 (en) * 1997-03-04 2007-08-01 Canon Kabushiki Kaisha Exposure unit, exposure system and device manufacturing method
US5805964A (en) * 1997-04-29 1998-09-08 Xerox Corporation Inorganic coated development electrodes and methods thereof
US6137864A (en) * 1997-07-25 2000-10-24 Lucent Technologies Inc. Specifiable delete times for voice messaging
US6088720A (en) * 1997-07-29 2000-07-11 Lucent Technologies Inc. Self-cleaning and forwarding feature for electronic mailboxes

Patent Citations (76)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3130387A (en) * 1958-02-06 1964-04-21 Int Standard Electric Corp Buffer system for transferring data between two asynchronous data stores
US3292153A (en) * 1962-10-01 1966-12-13 Burroughs Corp Memory system
US3699533A (en) * 1970-10-29 1972-10-17 Rca Corp Memory system including buffer memories
US4123795A (en) * 1971-09-07 1978-10-31 Texas Instruments Incorporated Control system for a stored program multiprocessor computer
US3806888A (en) * 1972-12-04 1974-04-23 Ibm Hierarchial memory system
US3949379A (en) * 1973-07-19 1976-04-06 International Computers Limited Pipeline data processing apparatus with high speed slave store
US3928857A (en) * 1973-08-30 1975-12-23 Ibm Instruction fetch apparatus with combined look-ahead and look-behind capability
US4084228A (en) * 1973-11-30 1978-04-11 Compagnie Honeywell Bull Process management structures and hardware/firmware control
US3936804A (en) * 1973-12-13 1976-02-03 Honeywell Information Systems, Inc. Data processing system incorporating a logical move instruction
US3909799A (en) * 1973-12-18 1975-09-30 Honeywell Inf Systems Microprogrammable peripheral processing system
US4021782A (en) * 1974-01-07 1977-05-03 Hoerning John S Data compaction system and apparatus
US4040026A (en) * 1974-05-08 1977-08-02 Francois Gernelle Channel for exchanging information between a computer and rapid peripheral units
US3949377A (en) * 1974-09-03 1976-04-06 Ultronic Systems Corporation Data storage and processing apparatus including processing of spacer characters
US3976977A (en) * 1975-03-26 1976-08-24 Honeywell Information Systems, Inc. Processor for input-output processing system
US4086629A (en) * 1975-07-09 1978-04-25 International Computers Limited Hierarchical data store with look-ahead action
US4035778A (en) * 1975-11-17 1977-07-12 International Business Machines Corporation Apparatus for assigning space in a working memory as a function of the history of usage
US4077059A (en) * 1975-12-18 1978-02-28 Cordi Vincent A Multi-processing system with a hierarchial memory having journaling and copyback
US4054951A (en) * 1976-06-30 1977-10-18 International Business Machines Corporation Data expansion apparatus
US4096567A (en) * 1976-08-13 1978-06-20 Millard William H Information storage facility with multiple level processors
US4215400A (en) * 1976-11-17 1980-07-29 Tokyo Shibaura Electric Co. Ltd. Disk address controller
US4091455A (en) * 1976-12-20 1978-05-23 Honeywell Information Systems Inc. Input/output maintenance access apparatus
US4080651A (en) * 1977-02-17 1978-03-21 Xerox Corporation Memory control processor
US4110823A (en) * 1977-02-17 1978-08-29 Xerox Corporation Soft display word processing system with multiple autonomous processors
US4080652A (en) * 1977-02-17 1978-03-21 Xerox Corporation Data processing system
US4126894A (en) * 1977-02-17 1978-11-21 Xerox Corporation Memory overlay linking system
US4084234A (en) * 1977-02-17 1978-04-11 Honeywell Information Systems Inc. Cache write capacity
US4158235A (en) * 1977-04-18 1979-06-12 Burroughs Corporation Multi port time-shared associative buffer storage pool
US4310883A (en) * 1978-02-13 1982-01-12 International Business Machines Corporation Method and apparatus for assigning data sets to virtual volumes in a mass store
US4189770A (en) * 1978-03-16 1980-02-19 International Business Machines Corporation Cache bypass control for operand fetches
US4228501A (en) * 1978-06-21 1980-10-14 Data General Corporation Data transfer technique for use with peripheral storage devices
US4246637A (en) * 1978-06-26 1981-01-20 International Business Machines Corporation Data processor input/output controller
US4276595A (en) * 1978-06-30 1981-06-30 International Business Machines Corporation Microinstruction storage units employing partial address generators
US4318184A (en) * 1978-09-05 1982-03-02 Millett Ronald P Information storage and retrieval system and method
US4241420A (en) * 1978-11-01 1980-12-23 Bank Computer Network Corporation Disk data control
US4327408A (en) * 1979-04-17 1982-04-27 Data General Corporation Controller device with diagnostic capability for use in interfacing a central processing unit with a peripheral storage device
US4298932A (en) * 1979-06-11 1981-11-03 International Business Machines Corporation Serial storage subsystem for a data processor
USRE36989E (en) * 1979-10-18 2000-12-12 Storage Technology Corporation Virtual storage system and method
US4467421A (en) * 1979-10-18 1984-08-21 Storage Technology Corporation Virtual storage system and method
US4412285A (en) * 1981-04-01 1983-10-25 Teradata Corporation Multiprocessor intercommunication system and method
US4414644A (en) * 1981-04-03 1983-11-08 International Business Machines Corporation Method and apparatus for discarding data from a buffer after reading such data
US4533995A (en) * 1981-08-03 1985-08-06 International Business Machines Corporation Method and system for handling sequential data in a hierarchical store
US4792898A (en) * 1986-09-26 1988-12-20 Mccarthy Donald F Method and apparatus for temporarily storing multiple data records
US5455926A (en) * 1988-04-05 1995-10-03 Data/Ware Development, Inc. Virtual addressing of optical storage media as magnetic tape equivalents
US5313617A (en) * 1990-03-19 1994-05-17 Hitachi, Ltd. Multi-disc optical data storage system for use with a host computer for emulating a magnetic disc device
US5388260A (en) * 1990-05-21 1995-02-07 International Business Machines Corporation Transparent library management
US5317728A (en) * 1990-09-07 1994-05-31 International Business Machines Corporation Storage management of a first file system using a second file system containing surrogate files and catalog management information
US5164909A (en) * 1990-11-21 1992-11-17 Storage Technology Corporation Virtual robot for a multimedia automated cartridge library system
US5327535A (en) * 1991-08-29 1994-07-05 Hitachi, Ltd. Magnetic recording control apparatus
US5287459A (en) * 1991-10-03 1994-02-15 International Business Machines Corporation Method and apparatus for reducing response time in automated library data retrieval systems
US5548724A (en) * 1993-03-22 1996-08-20 Hitachi, Ltd. File server system and file access control method of the same
US5623669A (en) * 1993-07-21 1997-04-22 International Business Machines Corporation High speed online copy of partitioned data
US5829045A (en) * 1994-10-28 1998-10-27 Fujitsu Limited Apparatus for restoring/copying the contents recorded in a storage medium to an auxiliary storage including partitions having independent file structures
US5566315A (en) * 1994-12-30 1996-10-15 Storage Technology Corporation Process of predicting and controlling the use of cache memory in a computer system
US5953350A (en) * 1995-03-13 1999-09-14 Selsius Systems, Inc. Multimedia client for multimedia/hybrid network
US5793714A (en) * 1995-05-31 1998-08-11 Fujitsu Limited Optical disk library apparatus of desk-top type
US6115331A (en) * 1995-05-31 2000-09-05 Fujitsu Limited Optical disk library apparatus of desk-top type
US5613155A (en) * 1995-06-07 1997-03-18 International Business Machines Corporation Bundling client write requests in a server
US5752268A (en) * 1995-06-19 1998-05-12 Kabushiki Kaisha Toshiba Minimum-delay recoverable disk control system using checkpoints and nonvolatile memory
US5805538A (en) * 1995-11-17 1998-09-08 Matsushita Electric Industrial Co., Ltd. Method for reproducing multiple optical recording medium without interruption
US5742789A (en) * 1995-12-28 1998-04-21 Emc Corporation Dynamically adaptive data retrieval for a disk drive storage system
US6298386B1 (en) * 1996-08-14 2001-10-02 Emc Corporation Network file server having a message collector queue for connection and connectionless oriented protocols
US5805864A (en) * 1996-09-10 1998-09-08 International Business Machines Corporation Virtual integrated cartridge loader for virtual tape storage system
US5926649A (en) * 1996-10-23 1999-07-20 Industrial Technology Research Institute Media server for storage and retrieval of voluminous multimedia data
US5926834A (en) * 1997-05-29 1999-07-20 International Business Machines Corporation Virtual data storage system with an overrun-resistant cache using an adaptive throttle based upon the amount of cache free space
US6269464B1 (en) * 1997-06-18 2001-07-31 Sutmyn Storage Corporation Error checking technique for use in mass storage systems
US6173359B1 (en) * 1997-08-27 2001-01-09 International Business Machines Corp. Storage and access to scratch mounts in VTS system
US5960451A (en) * 1997-09-16 1999-09-28 Hewlett-Packard Company System and method for reporting available capacity in a data storage system with variable consumption characteristics
US6052765A (en) * 1998-04-21 2000-04-18 Storage Technology Corporation Method for optimized placement of virtual volumes on a physical cartridge
US6151666A (en) * 1998-05-27 2000-11-21 Storage Technology Corporation Method for reclaiming fragmented space on a physical data storage cartridge
US6067587A (en) * 1998-06-17 2000-05-23 Sutmyn Storage Corporation Method for serializing and synchronizing data packets by utilizing a physical lock system and a control data structure for mutual exclusion lock
US6289425B1 (en) * 1998-07-01 2001-09-11 Storage Technology Corporation Method for verifying availability of data space in virtual tape system
US6317814B1 (en) * 1998-07-01 2001-11-13 Storage Technology Corporation Method for selectively storing redundant copies of virtual volume data on physical data storage cartridges
US6789161B1 (en) * 1998-07-06 2004-09-07 Storage Technology Corporation Method for controlling reutilization of data space in virtual tape system
US6049848A (en) * 1998-07-15 2000-04-11 Sutmyn Storage Corporation System and method for performing high-speed tape positioning operations
US6324497B1 (en) * 1998-07-15 2001-11-27 Sutmyn Storage Corporation Tape drive emulation system including tape library interface
US6330621B1 (en) * 1999-01-15 2001-12-11 Storage Technology Corporation Intelligent data storage manager

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030147361A1 (en) * 2000-09-01 2003-08-07 Ryota Tsukidate Reception terminal simulator, sending schedule making device, reception terminal, data transmission/reception system comprising them
US20060015507A1 (en) * 2004-07-17 2006-01-19 Butterworth Henry E Controlling data consistency guarantees in storage apparatus
US8341458B2 (en) * 2004-07-17 2012-12-25 International Business Machines Corporation Controlling data consistency guarantees in storage apparatus
US8145861B1 (en) * 2005-10-17 2012-03-27 Unisys Corporation Managing data transfer between different types of tape media with encryption
WO2008061892A1 (en) * 2006-11-22 2008-05-29 International Business Machines Corporation Apparatus and method for resource reclamation in data storage systems
US20100070734A1 (en) * 2006-11-22 2010-03-18 International Business Machines Corproation Resource Reclamation in Data Storage
JP2010510597A (en) * 2006-11-22 2010-04-02 インターナショナル・ビジネス・マシーンズ・コーポレーションInternational Business Maschines Corporation Apparatus and method for resource reuse in a data storage
US8140814B2 (en) 2006-11-22 2012-03-20 International Business Machines Corporation Resource reclamation in data storage
US20100030957A1 (en) * 2008-07-30 2010-02-04 Fujitsu Limited Virtual tape system
US8392652B2 (en) * 2008-07-30 2013-03-05 Fujitsu Limited Virtual tape system
US9557928B2 (en) 2009-07-09 2017-01-31 International Business Machines Corporation Autonomic reclamation processing on sequential storage media
US9104629B2 (en) 2009-07-09 2015-08-11 International Business Machines Corporation Autonomic reclamation processing on sequential storage media
US20120102279A1 (en) * 2010-10-20 2012-04-26 International Business Machines Corporation Preserving a deleted data volume
US8732429B2 (en) * 2010-10-20 2014-05-20 International Business Machines Corporation Preserving a deleted data volume
US20130185500A1 (en) * 2011-01-12 2013-07-18 International Business Machines Corporation Autonomic reclamation processing for tapes
US8930617B2 (en) * 2011-01-12 2015-01-06 International Business Machines Corporation Autonomic reclamation processing for tapes
US8935469B2 (en) * 2011-01-12 2015-01-13 International Business Machines Corporation Autonomic reclamation processing for tapes
US20120179868A1 (en) * 2011-01-12 2012-07-12 International Business Machines Corporation Autonomic reclamation processing for tapes
US20130173859A1 (en) * 2011-12-30 2013-07-04 Oracle International Corporation Logically Partitioning Remote Virtual Library Extensions for Use in Disaster Recovery of Production Data
US9575684B2 (en) * 2011-12-30 2017-02-21 Oracle International Corporation Logically partitioning remote virtual library extensions for use in disaster recovery of production data
US9703648B2 (en) * 2011-12-30 2017-07-11 Oracle International Corporation Logically partitioning remote virtual library extensions for use in disaster recovery of production data

Also Published As

Publication number Publication date Type
JP2002520696A (en) 2002-07-09 application
US6925525B2 (en) 2005-08-02 grant
US7873781B2 (en) 2011-01-18 grant
WO2000002139A1 (en) 2000-01-13 application
US20080263272A1 (en) 2008-10-23 application
EP1093620A4 (en) 2007-05-02 application
US20030028718A1 (en) 2003-02-06 application
US6789161B1 (en) 2004-09-07 grant
EP1093620A1 (en) 2001-04-25 application
US6094605A (en) 2000-07-25 grant

Similar Documents

Publication Publication Date Title
US6269431B1 (en) Virtual storage and block level direct access of secondary storage for recovery of backup data
US5546557A (en) System for storing and managing plural logical volumes in each of several physical volumes including automatically creating logical volumes in peripheral data storage subsystem
US6119118A (en) Method and system for extending file system metadata
US6604168B2 (en) Flash eeprom management using ratio of used to unused sectors
US6092168A (en) Data storage system and method for deallocating space by writing and detecting a predefined data pattern
US5398142A (en) Method for eliminating file fragmentation and reducing average seek times in a magnetic disk media environment
US6192444B1 (en) Method and system for providing additional addressable functional space on a disk for use with a virtual data storage subsystem
US5860135A (en) File managing device of a non-volatile memory, a memory card and method for controlling a file system
US6823442B1 (en) Method of managing virtual volumes in a utility storage server system
US6081879A (en) Data processing system and virtual partitioning method for creating logical multi-level units of online storage
US5890169A (en) Disk fragmentation reduction using file allocation tables
US5893097A (en) Database management system and method utilizing a shared memory
US6442648B1 (en) Method of and system for the dynamic scheduling of requests to access a storage system
US5367671A (en) System for accessing extended object attribute (EA) data through file name or EA handle linkages in path tables
US6324546B1 (en) Automatic logging of application program launches
US20070186065A1 (en) Data storage apparatus with block reclaim for nonvolatile buffer
US20060020745A1 (en) Fat analysis for optimized sequential cluster management
US6286056B1 (en) Data storage device with small computer system interface providing persistent reservations
US6421767B1 (en) Method and apparatus for managing a storage system using snapshot copy operations with snap groups
US20100005270A1 (en) Storage unit management methods and systems
US5813011A (en) Storage of a compressed file containing its own compression management table
US5437012A (en) System for updating directory information and data on write once media such as an optical memory card
US5805864A (en) Virtual integrated cartridge loader for virtual tape storage system
US6205529B1 (en) Method and apparatus for defragmenting a storage device using a copy function in the device control logic
US5737743A (en) Disk block controller and file system which supports large files by allocating multiple sequential physical blocks to logical blocks