JP3119992B2 - Data storage device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data storage device using a plurality of data storage media that can be loaded or unloaded.

[0002]

2. Description of the Related Art In recent years, with the progress of computerization of office information and the spread of a network environment, a need for a device capable of efficiently and efficiently storing information in a large capacity has been increasing. As a device for collectively storing large-capacity data, a device using a large-capacity fixed magnetic disk device is generally used. For applications with an ultra-large capacity, various devices have been proposed in which the devices are configured in multiples. For example, regarding a library type cartridge magnetic tape device medium management system, an operation support system for optimally storing a medium based on medium access information (Japanese Patent Laid-Open No. 5-182421).
Reference), and the like.

[0003] Although a large-capacity data storage device has a large capacity, it naturally has a limited capacity. If data near the maximum capacity is stored, some kind of data extraction processing is required. Magnetic tapes and optical disks are common examples of large-capacity portable storage media for this purpose. In recent years, a system using both an optical disk and a magnetic disk has been proposed as an example in which the storage medium is used and the apparatus supports the extraction processing to some extent.

[0004]

As described above, although a large-capacity data storage device is used, if the stored data is close to the maximum capacity, the stored data must be extracted. Generally, a system administrator selects data with a low access frequency, confirms necessary data, and writes out the data to a magnetic tape or optical disk. This conventional method has the following problems.

[0005] First, the processing has a problem that a great deal of labor is imposed on an operation manager. Since it is not possible to exclude data with a high access frequency, it is necessary to individually check the access frequency of each data and perform the processing of extracting the corresponding data. This requires more effort for larger capacity.

Next, there is a problem regarding the security of the extracted data. Data security and confidentiality are major issues in security, but there are few devices that take these points into account in the past. In addition, there is a problem in processing when it is necessary to return the extracted data to the device again. A small number of the extracted data does not cause much problem, but a large number of data require as much labor as at the time of the extraction.

[0007] In recent years, data used in one business is one.
It is rarely necessary to use only one file. For example, even a single CAD drawing is composed of many files. It is very difficult to incorporate them into the device in an error-free manner, and the processing becomes more and more complicated especially when files with the same name are on the same path. As described above, in the related art, basically, after the storage capacity in the apparatus becomes full, a measure is taken such that the operation manager immediately performs the extraction processing.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the conventional apparatus. In particular, in a large-capacity data storage apparatus, a data storage apparatus which facilitates operation management of stored data and storage media and has excellent operability. It is intended to provide.

[0009]

According to a first aspect of the present invention, there is provided a data storage device for managing a data group stored in a data storage medium, wherein a file for logically managing the data group in a file form is provided. A media group comprising one or a plurality of the data storage media, a media group having a plurality of the media groups, and a media group management means for managing the media group independently of the file management means. And a data storage device characterized by having the following.

According to a second aspect of the present invention, in a data storage device for managing a data group stored in a data storage medium, a media group including one or more data storage media, and one or more media providing a plurality of media group group consisting of the group, and means for specifying the migration conditions for migrating data stored in one media group group of this to the other one of the media group group was the designated
Migration conditions and media groups similar to the one above
Migrate by referring to the attribute information of the stored data
A data storage device comprising: a migration execution unit that determines data to be subjected to the migration and executes migration of the data.

According to a third aspect of the present invention, the above-mentioned my
Migration to detect migration process deficiencies
Error detection means and migration execution error
Based on the detection result of the detection means,
Warning means to alert the operator to the effect
Based on the detection result of the ignition execution deficiency detection means,
When a lack of execution is detected, a predefined media group or
Requests operation input for instructions to reconfigure media groups
Media group reconfiguration to receive and receive instructions
Request instructing means and an instruction from the reconfiguration instructing means.
Reconfiguration executing means for executing reconfiguration.
A data storage device according to claim 2 is obtained.

[0012]

[0013]

[0014]

According to the above invention, in the file management means,
The data group stored in the data storage medium is configured as a logical collection in the form of a file, and is managed, for example, hierarchically. On the other hand, in the media group management means, a media group is provided by collecting one or more data storage media such as an optical disk, and a plurality of media groups are collected to form a media group. The grouping unit is defined based on, for example, a media group attribute specified in advance. Then, the media group management means manages and operates the storage position or access frequency of the media group independently of the file management means.

Also, a plurality of media groups including one or a plurality of media groups are provided, and the migration conditions specified by the migration condition specifying means, such as path names and file sizes, are stored in one media group. While referring to the data attribute information,
The migration data determining means determines and selects the data to be migrated, and based on the determination result, the migration executing means performs the migration of the data.

Further, when reloading the removed and carried out media group, conditions for incorporating the data stored in the media group into the device by the inclusion condition designating means, for example, the inclusion data selection condition, the media group security selection condition , And referring to the incorporation condition and the attribute information of the data stored in the apparatus, the incorporation mode determination means determines the incorporation processing execution mode. Then, based on the result of the determination, the incorporation data is executed by the incorporation executing means.

Furthermore, when an arbitrary media group is removed from the apparatus, the removal processing means removes the media group by adding the media group configuration information of the media group, and when reloading the removed media group,
The loading processing means starts the insertion processing based on, for example, the time in the media group configuration information.

Further, if the migration execution deficiency detecting means detects, for example, that transfer reading or writing to the media group is not possible, a warning is given to the operator when the execution deficiency is detected, and the media group reconfiguration request instructing means is provided. Requests an operation input of an instruction to reconfigure a media group or a media group group defined in advance. Then, based on the instruction, the reconfiguration execution means executes the reconfiguration.

[0019]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of an embodiment according to the present invention. In this embodiment, a system using an optical disk as a portable medium as a data storage medium is taken as an example. An optical disk medium group 101 serving as a data storage medium is stored on a shelf. The storage medium is not limited to an optical disk, but may be any portable recording medium such as a floppy disk or a memory card.

An optical disk drive 102 for reading / writing data from / on an optical disk and an autochanger mechanism 103 for taking out an optical disk stored in a shelf and loading / unloading the optical disk drive are provided. The entire device including these devices 102 and 103 is controlled by a control device 104. This control device 10
4, a communication circuit 106 for exchanging stored data with the outside is connected. Reference numeral 105 denotes a control line and a data transfer line for connecting the modules.

Next, details of the control device 104 will be described with reference to FIG. A central processing unit (hereinafter, referred to as “CPU”) 201 that controls the entire system is connected to the optical disk drive 102 and the autochanger mechanism 103 in FIG. 1 via interface controllers 202 to 206. In this embodiment, in order to speed up data access to the medium 101, the interface controllers 202 to 206 are individually prepared for each drive of an optical disk provided in the apparatus. Further, the control of the autochanger mechanism 103 is performed via one of the interface controllers.

A program memory 207 for storing the execution program is connected to the CPU 201, and data is temporarily stored in a buffer memory 208. Further, an encryption processing unit 209 is provided to perform an encryption process described later. Parity processing, specifically, parity generation means 210 for generating parity is provided. In order to exchange data with an external system, a communication processing control unit 211 is provided. Command / status / data exchange between the above-described units is performed via the data transfer bus 212 under the control of the CPU 201.

Next, a software configuration of the apparatus according to the present embodiment will be described with reference to FIG.

FIG. 3A shows a basic configuration of software processing. In the present embodiment, as shown in the figure, the processing is roughly divided into four processing layers. The uppermost layer is an application layer 301, which is a layer for building various application software by using the file system layer 302 at the next stage. The file system layer 302 at the next stage handles data as a logical aggregate in the form of a file, and is generally managed in a hierarchical tree-like form. Such a management method is adopted in a standard system such as so-called UNIX or MS-DOS.

The next stage is a media / data management layer 303 which is a layer unique to the present embodiment, and exists independently of the upper file system layer 302.
It manages data and media. here,
In addition to managing data / media such as data storage locations, record management in accordance with the life cycle of data, that is, managing access reports for each data and medium, and data with a high access frequency according to the present embodiment. For the media loaded in the optical disk drive 102, for those having a low access frequency, the autochanger mechanism 103 controls the media to be stored in the media stored in the storage shelf, respectively.

The lowermost stage is a hardware control layer 304 for controlling hardware such as the optical disk drive 102 or the autochanger mechanism 103.

In a conventional apparatus, as shown in FIG.
Since the file system layer 306 used the hardware control layer 307 to perform processing such as data storage, retrieval, and deletion, the above-described record management
In the application layer 305, the processing can only be performed using dedicated software, and the operation manager can only perform the processing manually.

In the former case, application programs are different depending on the use of data. Therefore, if a high-level operation management is to be performed, it must be individually incorporated into each application program. It is. Therefore, record management is generally performed by the latter method.However, when the amount of stored data is enormous, the number of operations increases at a stretch, and it takes a lot of time and manpower, making it difficult to realize. ing. In this embodiment, a media / data management layer 303 is provided below the file system layer 302 independently of the file system to eliminate these drawbacks and enable record management independently of the application. The above-described processing is executed independently of 302.

FIG. 3C shows a software configuration implemented in the apparatus according to the above embodiment. This software configuration is roughly divided into three layers. Reference numeral 310 denotes a lower layer, which corresponds to the hardware control layer 304, and is a portion that controls hardware control and an operating system (hereinafter, referred to as an “OS” (not shown)) of the apparatus.

Reference numerals 311 to 315 denote driver software for controlling each of the above-mentioned hardware means. Reference numeral 320 denotes a middle layer, which corresponds to the file system layer 302 and the media / data management layer 303, and is generally called a subsystem level. Means specific to this embodiment are mainly provided in this layer. I have. Details of 321 to 325 will be described later. Reference numeral 326 denotes a file system for constructing file subsystem software, which corresponds to the file system layer 302. Each subsystem in the middle layer 320 controls a combination of modules in the lower layer 310, and executes a target process.

Reference numeral 330 denotes a so-called application layer (corresponding to the application layer 301), which includes application software used in the device. Here, the database processing application 331 is provided as an example of the basic application of the device, but this is of course not limiting. 3
Reference numeral 32 denotes an operation management application which processes various man-machine interfaces for facilitating operation management intended in the present embodiment.

There are various methods for storing data, and the following method shown in this embodiment is generally used. FIG. 4 shows the management method, and data is managed in a tree-like form as shown in FIG. In the figure, DIR ** indicates a directory and DTA ** indicates data (file). In this embodiment, all of these data and directory information are stored on a group of media provided in the device.

For example, when it is desired to access certain data, the user designates a directory containing this data and accesses it. If the data is under a plurality of hierarchies, specify the directory sequence up to that level. This is called an access path. Data access is specified by an access path name and a data name (file name). When storing data, a directory to be stored is given by a path name.

The data management method in this embodiment is not necessarily limited to the above-described management method. The above management method is generally called a file system. In the software configuration diagram of the present embodiment, a file system 326 is a means for managing this. As specific processing, data management is performed using the file management table shown in FIG. 9 as described later. This management method is not limited to this. The above is how the data management is viewed from the viewpoint of the data user, and is referred to herein as a “logical aspect” of the data management.

One of the points of this embodiment is that a physical management means is provided for a storage portion of actual data independently of a logical aspect of the data. In this embodiment, data is stored on a plurality of optical disk media 101 as shown in FIG. The present embodiment provides the management of the physical storage part as an optimal form for the operation of the system.

For example, as shown in the figure, DTA11 and DTA12 are under the same directory DRI1,
The storage medium DTA11 is the medium 101a, whereas the DTA12 is the storage medium 101b, which is completely different. This is based on the idea that the media to be stored should not be determined from the application on the device but should be determined from the convenience of operation management. Also, by separating the logical aspect of data management from the physical management, the user can operate the apparatus without being particularly conscious of which medium the data is physically stored in.

Hereinafter, specific adaptation will be described in detail.

In this embodiment, the media group management means 321 shown in FIG. 3 is provided so that data storage media can be grouped into one or more media according to various operations. FIG. 5 shows an example of grouping, in which seven groups 502 to 508 each including one to five optical disk media 501 are shown. Further, here, an example in which a plurality of groups have an inclusive relation in common is also shown. That is, the group 507 is composed of subgroups of the groups 504 and 505, and the group 508 is a group 505.
And 506 subgroups. As a special case, the group 505 is included in both of the two groups 507 and 508.

As described above, the structure of each group is determined based on the attribute according to its use. First, when high reliability is required, for example, one disk in the group 502 is used as a parity disk, and the data in the group 502 is parity-matched. By doing so, with respect to the damage of one medium in the group 502, the data of the damaged medium can be recovered based on the logical operation of the data of the other medium, and the reliability is improved. When high confidentiality is required for a certain data group, the data group is stored in a specific media group, for example, 503, and all the data in the media group 503 is encrypted and stored.

Further, among the data stored in the apparatus, those which are hardly used are collected in a specific media group, and if possible, are carried out from the apparatus to improve the processing efficiency of the entire apparatus. Therefore, for example, when the access frequency is lower than a specified level, these data are stored in a specific media group, and when the specified time elapses or the data stored in the media group becomes full, Take it out every time.

When the above operation is performed, if the resident and non-resident units are defined in advance, the operational convenience is further increased. For example, when the amount of stored data is constantly increasing, a media group in which nothing is newly stored is imported into the device, while those with low access frequency are collected, and the media group storing these data is exported from the device. Becomes possible. In configuring a media group, the storage capacity of the media group becomes an important factor in the configuration when the above operation is intended.

As described above, one or more media are grouped to form a media group, and the media group attribute is assigned to each media to operate the apparatus, thereby improving the operation convenience. A plurality of media group attributes can be assigned to a single media group. For example, a parity attribute and a security attribute can be assigned, or a resident group can be formed by including a plurality of media groups having a parity attribute. Can be.

FIG. 6 shows the media group management means 321.
3 shows a management table of a media group handled by. In the figure, the media ID is an identifier of each medium. For example, if there is a uniquely determined one such as a registration number of the medium, it is used. The group name is registered with the identification name of the group, and the group attribute is registered with the above-described media group attribute.

FIG. 7 shows an example in which 20 media are grouped into 6 media. FIG. 8 shows an example of group names and group attributes assigned to the respective groups 601 to 606 shown in FIG. In this example, 4
On the basis of the parity group having the number of disks, the two non-resident groups 602 and 603 and one resident group 601 are roughly divided, and the two non-resident groups 602 and 603 are provided with encryption keys 1 and 2 to secure confidentiality. Enhance
Resident group 601 has three subgroups 604-60
6 is given an access frequency range fah0 to fah1 and the like, and data corresponding to the range is stored.

FIG. 7 shows how data in the resident group 601 is migrated to the non-resident groups 602 and 603. For example, data with low access frequency of the resident group is migrated to the non-resident group as needed, and when data of a specific medium in the non-resident group becomes full, it is removed and new media is loaded. If such operation is always performed, the storage capacity can theoretically be unlimited.

Here, the relationship with the upper logical cut will be described. In general, the management method in a logical aspect has been briefly mentioned above, but as an example of the management method, FIG.
An example of the file management table shown in FIG. As described above, in this embodiment, data is managed by a file name and a path of a directory string in which the file name is logically stored. As shown in the figure, the file is managed by other information such as file size, creation date, modification date, owner, access attribute, access frequency, and the like.

Here, the access attribute defines whether the file can be read or written. The access frequency indicates how frequently the data of the file is accessed. For example, how many times the unit has been accessed within the unit time up to the present, or the date, time, minute, and second of the most recent access are registered and managed. Naturally, the registered contents of the access attribute are updated periodically and each time an access is made. In this embodiment, in addition to the above, the ID of the storage medium is managed.

Next, the flow of processing for storing data in the apparatus of this embodiment will be described. First, as shown in FIG. 1 and FIG. 2, a storage request command is transmitted from the external device to the device via the communication line 106, together with designation of a logical storage destination such as data to be stored and its path name. . When the communication processing control unit 211 detects that this data has been received, it sends a reception acceptance signal to the CPU 201. The CPU 201 performs a receiving process according to a predetermined procedure. This processing is specifically performed by the communication processing control means 315 shown in FIG.

Once the data is received, in the simplest case, the received data is passed to the file system 326 as it is.

The operation will be described below with reference to the flowchart of FIG. First, a storage medium is selected based on the path name of the designated storage destination (ST01). This storage medium is obtained by searching the table shown in FIG. 9 based on the medium ID. Next, when the medium is specified, the table shown in FIG. 6 is similarly searched for and acquired based on the media ID obtained by the search to obtain what kind of media group attribute the medium has (S)
T02). After performing the writing process according to the attribute, the table is updated by adding the file name of the data and the attribute information to the table in FIG. 9, and the writing process is completed (ST03, ST04).

As described above, in this embodiment, since there are a plurality of types of media group attributes, processing corresponding to each type is required. For example, the processing shown in the flowchart of FIG. 11 is required. According to this, for a media group having an access frequency attribute (ST11), it is necessary to specify the group by searching for the relevant media on the basis of the default value of the access frequency of the stored data in the table of FIG. (ST12, ST13). As the default value of the access frequency, a predetermined value may be determined in advance, or may be specified from an external device. In the table of FIG. 6, encryption processing (ST14, ST15) is performed on a media group having a security attribute, and parity processing (ST16, ST17) is performed on a media group having a parity attribute to perform writing. The corresponding operation processing is performed on the media group having the other operation attribute (ST18, ST19).

FIGS. 12 and 13 are explanatory diagrams of data processing in the case of having a security attribute and data processing in the case of having a parity attribute, respectively.

Although there are various schemes for the encryptor 209 such as a scheme which is regarded as an international standard, simply, for each prescribed data length, the rules specified by the encryption key for the write data. , The data may be replaced based on the data, thereby obtaining encrypted write data.

For the parity operator 210, PNEW = POLD (+) DOLD (+) in order to achieve parity matching.
DNEW: (+) is processed by an XOR operation, and the result is written. Here, DOLD is the data already recorded in the write area of the data disk, POLD is the parity data already recorded in the area of the parity disk corresponding to that area, DNEW is the new write data, and PNEW is the updated parity. Data.

In the present embodiment, as described above, the operation management of the media is improved in terms of reliability, confidentiality, and the fact that data is discharged when the storage capacity of the device is full. However, regarding the access frequency attribute, for example, the media determined at the time of writing is not always permanent, for example, the access frequency of each data dynamically changes depending on whether or not the data is accessed. Therefore, it is necessary to periodically update the stored data.
In particular, in order to avoid a situation where the amount of stored data becomes large and the storage amount of the apparatus becomes full and the user cannot move, it is necessary to perform processing such as periodically discharging the least frequently used data.

Therefore, in this embodiment, the migration control means 322 shown in FIG. 3 is provided. This control means 32
As shown in FIG. 14, the configuration of No. 2 is a condition for migrating stored data from a first media group group including one or more media groups to a second media group group also including one or more media groups. Migration condition specifying means 805 for specifying
Migration data determining means 8 for determining and selecting data to be migrated by referring to the migration conditions specified by the specifying means 805 and the attribute information of the data stored in the first media group group.
02, and a migration execution unit 806 for executing migration of the relevant data based on the determination result from the determination unit 802. In addition, a migration condition description information management unit 803 for holding and managing migration conditions as migration condition description information is provided.

As the migration conditions, target data selection conditions, migration execution conditions, and migration start conditions are specified. Further, as the target data selection condition, data attributes such as a path name, a file size, a creation date, a modification date, an owner, a security level, and an access frequency are described. The migration execution conditions include Move, Copy,
A transfer attribute such as “Delete” is described.
As the migration start condition, start attributes such as total amount of migration source data stored, time, time interval, average access frequency, removal time, operator instruction, and the like, and continuous attributes such as execution time, number of executions, and amount of execution data are described.

FIG. 15 shows a description example of the migration condition. Here, the transfer source and the transfer destination of the media group to be migrated are described first. Next, conditions for selecting data to be migrated and processing to be performed when the migration is executed will be described. This can be described as many times as you like. The data selection of the transfer source is specified by the data attribute, which can be specified by the items managed in the table shown in FIG. For example, the path name column in FIG. 15 indicates that data under a plurality of designated paths is to be migrated. The following path name / owner indicates that the data of the specified owner under the specified path is to be migrated, and the access frequency <specified value is the data with the access frequency equal to or less than the specified value Is shown.

There are three types of migration conditions. Move is for moving the target data from the transfer source group to the transfer destination group.
opay) is for copying, and delete is for erasing the target data.

Next, as the migration start condition, it is described when the migration is started and how long the migration is continued. Here, it is shown that the process is started when the media in the media group is removed and when the time is 22:00, and the process is performed within the execution time. There are other conditions for the total amount of data stored in the migration source,
This is activated when the storage amount of the transfer source group exceeds the specified value. As for the time condition, it is started at the specified time,
The condition of the time interval is started periodically at specified time intervals. The condition of the average access frequency is activated when the designated data of the transfer source group falls below the designated access frequency. The conditions at the time of removal and at the time of operator's instruction are activated at the time of each action.

The continuation attribute indicates that the migration is continued until the number of executions reaches the specified number of migrations, and the amount of execution data until the specified total migration data amount or the like is satisfied, and then stopped.

Next, the operation of the migration control means 322 will be described with reference to FIGS.

The setting of the migration condition is designated by the user operator using the migration condition designation means 805 shown in FIG. Then, migration condition description information 804 shown in FIG. 15 is generated based on this, and the contents are interpreted by the migration condition description information management means 803 (ST21) and stored. Next, the migration data determination unit 802 searches the data attribute information 901 from the table of FIG. 9, selects data that matches the migration conditions, and lists the data as target data (ST22). Then, it is determined whether or not the current time is at the time of starting the migration (ST23). If it is not at the time of starting, the state is set to the waiting state (broken line in the figure) or the list is re-listed (solid line in the figure). If it is determined that the data is to be activated, migration is executed by the migration executing means 806 for the target data already listed in the above-mentioned designated continuation attribute (ST24), and when this is completed (ST25), the next activation is awaited.

As a result, the stored data is continuously and automatically migrated to the transfer destination media group, so that almost all necessary processing has been completed even when the media group is removed. , Can be removed at will and operation management becomes easy. Further, if an operation such as adding an unrecorded new medium is taken out when removed, it is possible to provide a data storage device having a virtually unlimited storage amount.

FIG. 25 shows the form of the data stored in the media group including the removed media 1, 2, and 3 as viewed from the user. As shown in the figure, in this embodiment, for example, all the management trees shown in FIG. 4 are recorded for all the removed media 1, 2, and 3. This makes it possible to determine to which directory the data stored in each of the media 1, 2, and 3 should belong under reloading. Here, the data DTA11 and DTA212 of the medium 1 are the stored data, and the data 2 of the medium 2 are DTA12 and DTA212.
2111 is stored data, and DTA
1, DTA211 is stored data.

On the other hand, in the present embodiment, when the removed media group is reloaded into the apparatus, it is possible to similarly specify how to incorporate the removed media group into the apparatus.
For this reason, in the present embodiment, as shown in FIG. 17, when the removed media group is reloaded, the inclusion condition designation means 905 for designating the conditions for incorporating the data stored in the media group into the data storage device, and this designation means 905
Incorporation mode determining means 90 for referring to the incorporation condition specified by the above and the attribute information 901 of the data stored in the data storage device to determine the incorporation processing execution mode.
2, and an incorporation processing execution unit 9 for executing the incorporation of the corresponding data based on the determination result from the determination unit 902
06.

In this embodiment, in addition, an incorporation condition description information management means 903 for holding and managing the incorporation condition as incorporation condition description information is provided. The inclusion condition specifies the inclusion data selection condition and the media group security selection condition. The conditions for selecting the data to be included are as follows: if there is data with the same path name at the time of insertion, delete the existing data of the device and copy / move the existing data to another path / copy the loaded data to another path / no operation etc. Can be specified. As the media group maintenance selection condition, which of read-only, read-write, and migration is to be performed on the loaded media group is specified.

FIG. 18 shows a description example of the inclusion condition description information. Here, the selection of “path by device existing data” is described as the inclusion data selection condition, and the path name is described. This means that when the same file name as that of the current device exists on the same path on the loaded medium, the data on the current device is moved under another specified path name on the current device when the That means replacing it with the one on the loaded media. The same applies to other cases, and the designation of "delete existing device data and copy" means that a file with the same name may be included regardless of the existence.

"Moving the loaded data to another specified path"
If there is a file with the same name, contrary to the previous example, the process of copying the data on the loaded media to another specified path of the device is further performed, and "No operation / no operation" Specifies that if there is a file with the same name, nothing is executed and the processing is ignored as it is. Here, the movement may be the same path. In that case, the movement is performed in the form of changing the file name, and the movement has a meaning including this.

On the other hand, the media group security selection condition is as follows:
This designates removal of the loaded media group after the installation processing. Normally, when loading and incorporating, execution is read-only. When this is designated as "read / write", new recording and writing of data to this media group becomes possible, and when "migration" is designated, migration can be executed again based on existing or new designated migration conditions. In other words, it means that it is possible to move another media group and move / copy from another media group.

Next, the operation of the incorporating control means 323 will be described with reference to FIGS. The setting of the incorporation condition is performed by the user using the incorporation condition designation means 905.
Specified by the operator. Then, based on that, Figure 1
8 is generated, and the contents are interpreted and stored by the inclusion condition description information management means 903 (ST31).

Next, the incorporation mode judging means 902 judges whether or not data having the same path and the same file name as the data to be incorporated exists in the incorporation destination (ST32, ST3).
3) If there is, the integration processing is performed according to the condition specified on the description information (ST34), and if not, the integration execution means 906 is instructed to perform the integration as it is (ST35). When the above-described incorporating process is completed (ST36), the maintenance condition is updated (S36).
T37).

FIG. 20 shows the processing when the same path and file name exist. Incorporation executing means 906 performs incorporation according to each condition. In this process, first, condition determination is performed (ST41), and when the existing device data is deleted and copied based on the designated condition (ST41).
42), when the existing data of the device is moved to another designated path (ST43), when the loaded data is moved to another designated path (ST44), or when nothing is executed (ST45), it is incorporated separately. Perform

The removal and loading of the media group is executed by the above-described processing. In the present embodiment, this can be performed by a simpler operation. For this reason, in the present embodiment, the removal processing means for adding and removing the media group configuration information of the media group when removing the arbitrary media group from the data storage device, and the removal processing means when the media group is reloaded, And a loading processing means for starting the assembling processing.

Here, as the media group configuration information, data attribute information such as the path name of the stored data, the media group attribute information, the migration condition description information when the migration condition is specified, and the incorporation When a condition is specified, there is information on the inclusion condition. These processes are executed by the loading / unloading control unit 324.

The processing flow is shown in FIGS. 21 and 22. At the time of removal, first, an inquiry is made to the above-mentioned migration control means 322 as to whether or not the previously searched migration processing has been completed (S
T51) If not completed, the migration process is completed (ST52). Thereafter, media group configuration information constituting the media group to be removed is added (ST53), and the process proceeds to the removal process (ST5).
4).

Next, when automatic loading is instructed when loading media (ST61), no matter which media is loaded,
Since all the configuration information of the media group is recorded, it is possible to automatically start the incorporation (ST62). That is, in this way, the loading automatically starts when the medium is loaded, so that the loading can be easily performed and the handling of the media with good operability can be performed.

By the way, when the above-mentioned migration is executed, not all instructions are always valid and executable. As described above, the removal instruction may be issued before the completion of the migration, or may not be accommodated in the transfer destination media group.

Therefore, in this embodiment, the migration monitoring means 325 shown in FIG. 23 is provided. This includes a migration control unit 322 at the center, a migration execution defect detection unit 1001 for detecting the execution defect of the migration processing, and a warning to the operator when the execution defect is detected based on the detection result of the detection unit 1001. Execution deficiency warning means 1002, detection means 1
Based on the detection result of 001, a media group reconfiguration request instructing means 1003 for requesting an operator to reconfigure a predetermined media group or a media group group upon execution failure detection and receiving the instruction, and the request instructing means 1003 And a reconfiguration execution unit 1004 for executing reconfiguration based on the instruction.

The migration execution deficiency detecting means 1001 detects whether transfer read / write is impossible to the media group or the media group group related to the migration, or the media group or the media group group related to the migration. When the removal process is instructed before the completion of the migration in which the designated item is designated, there is a detection means (not shown) for detecting execution failure.

On the other hand, media group reconfiguration executing means 1
004 is a medium replacement processing means for replacing another medium when it is detected that a write error has occurred in the medium of the migration destination media group or the media group group, and the data in the medium of the migration destination media group or the media group group. In the case where the overflow occurs, a media group expansion means for expanding the migration destination media group or media group group is provided (not shown).

Here, the operation of the migration monitoring means 325 will be described with reference to the operation flow of FIG. 23 and FIG. First, migration execution deficiency detection means 100
1 detects a defect in the execution of migration (ST
71), and informs the execution deficiency warning means 1002 of the fact and issues a request to present it to the user operator through the man-machine interface 1005 (ST72, S72).
T73, ST74). The user can issue an instruction depending on whether the error is simply a read / write error or the storage capacity of the transfer destination media group is insufficient.

In this embodiment, the reconfiguration request instructing means 100
3 performs automatic determination of the above situation, instructs the reconfiguration execution unit 1004 to execute the reconfiguration of the media group, and performs the process of performing the reconfiguration. The reconfiguration execution unit 1004 requests the migration control unit 322 to migrate newly generated data to the media group changed by this, and completes the reconfiguration at the end of the migration.

When a read / write error has occurred (ST75), an alternative medium is searched here, and migration is performed on the alternative medium (ST76, ST77). If an overflow has occurred (ST78), or if there is a possibility, the number of media in the media group is increased or another media group is added (ST79, ST8).
0). In this embodiment, since the parity attribute is configured in units of media groups, it is necessary to perform parity matching again when the configuration changes (ST81, ST8).
2).

However, if the added medium is completely new and all data are “0”, no special matching processing is required. In other cases, it is necessary to obtain new parity data PNEW from the data DORG on the additional medium and the parity data PORG of the corresponding portion of the parity disk by the following operation, and rewrite the new parity data PNEW on the parity disk.

PNEW = DORG (+) PORG: (+)
On the other hand, the detection of the execution deficiency is not limited to during the execution of the processing, and for example, the overflow can be determined when the migration condition is specified. That is, as soon as the migration condition is specified by the migration control means 322, an instruction is issued to the reconfiguration request instructing means 1003 to determine the media configuration (broken line in the figure). Then, the reconfiguration execution unit 1004 sets the media configuration,
It is also possible to automatically configure a media group that returns the result to the migration control unit 322.

Therefore, according to the above-described embodiment, it has become possible to simplify a conventional large-capacity data storage device in which operation management of stored data and storage media is extremely complicated. Then, the operation can be performed with the device storage capacity being logically unlimited by the automatic support means according to the present embodiment.

Further, in this embodiment, the user has a strong control of the operation management by providing the management means of the data storage medium for the operation management independently of the logical management of the high-order data and supporting the device by the device. It can be used without being used. In addition, since data integrity and confidentiality of the data on the transported medium are improved, a system excellent in security can be provided.

Further, in this embodiment, the data and media to be removed are directly specified in advance by a path name or a file name, or the access frequency is indirectly specified. Since the migration process is executed continuously or intermittently, the device can be quickly removed, does not require centralized processing at the time of removal, and can be provided with a device that is easy to manage.

In this embodiment, when a medium or a media group once removed is reloaded,
The present invention provides an apparatus that can be operated extremely simply and easily by eliminating complicated operation management as in the related art. In particular, in the case where a reloading media group has the same path name and file name on the device, a wide variation is provided for the incorporation process, and it can be processed by a simple operation.

Further, in this embodiment, if a media group becomes defective, a means for reconfiguring the media group or a processing means for automatically incorporating the removed media group upon reloading is provided. Therefore, it has become possible to provide a device with good operability that has never existed before.

[0093]

As described above, according to the present invention, since the configuration in which the media group management means for managing the media group independently of the file management means is adopted, the operation management of the stored data and the storage medium is performed. In addition to being simple, the user can use the device without being conscious of the operation management and can provide an apparatus having excellent operability.

Further, since the migration process is executed in accordance with the change of the data attribute, the centralized process at the time of the removal is not required, and therefore, the operation management which enables the quick removal is facilitated.

Further, when reloading the medium or the media group once removed, the loading is performed automatically when the medium is loaded, so that complicated operation management is eliminated and the operation is simplified and simplified.

Further, when a migration failure occurs in a media group, the media group can be reconfigured, and the media group can be automatically incorporated when reloaded into a detached media group. It has become possible.

[Brief description of the drawings]

FIG. 1 is a block diagram of an embodiment according to the present invention.

FIG. 2 is a block configuration diagram of a control device according to one embodiment.

FIG. 3 is a diagram showing a configuration of software according to one embodiment in comparison with a conventional configuration.

FIG. 4 is an explanatory diagram of a tree management method according to one embodiment;

FIG. 5 is a diagram showing an example of media grouping according to one embodiment.

FIG. 6 is a management table of a media group.

FIG. 7 is a diagram showing an example of grouping and a state of data migration.

8 is a diagram showing an example of a group name and a group attribute assigned to the group in FIG. 7;

FIG. 9 is a diagram showing a file management table.

FIG. 10 is a flowchart illustrating updating of a table based on media group attributes.

FIG. 11 is a flowchart illustrating processing according to a media group attribute.

FIG. 12 is an explanatory diagram of data processing when a security attribute is provided.

FIG. 13 is an explanatory diagram of data processing in the case of having a parity attribute.

FIG. 14 is a block diagram of a migration control unit.

FIG. 15 is a description example of a migration condition.

FIG. 16 is an operation flowchart of a migration control unit.

FIG. 17 is a block diagram of an incorporation condition designating unit.

FIG. 18 is a description example of inclusion condition description information.

FIG. 19 is an operation flowchart of the incorporating control means.

FIG. 20 is an explanatory diagram of the incorporating process when the same path and the same file name exist.

FIG. 21 is a flowchart of a loading / unloading process.

FIG. 22 is a flowchart of an incorporation process.

FIG. 23 is a block diagram of a migration monitoring unit.

FIG. 24 is an operation flowchart of a migration monitoring unit.

FIG. 25 is a diagram showing a tree structure showing a state of file management in a medium. l

[Explanation of symbols]

101 ... storage medium (optical disk media group), 102 ...
Optical disk drive, 103: autochanger mechanism, 104: control device, 105: control line (data transfer line), 106: communication line, 201: CPU, 202 to
206: Interface controller, 207: Program memory, 208: Buffer memory, 209: Encryption processing means, 210: Parity generation means (arithmetic means),
211: communication processing control means, 301: application layer, 302: file system layer, 303: media / data management layer, 304: hardware control layer, 305: application layer, 306: file system layer, 307: hardware control layer .., 310... Lower layer, 311... Autochanger control means, 312.
Parity processing control means, 314 ... encryption processing control means,
315: communication processing control means, 317: other control means,
Reference numeral 320: middle layer, 321: media group management means, 322: migration control means, 323: inclusion control means, 324: loading / unloading control means, 32
5: Migration processing monitoring means, 326: File system, 327: Other subsystem control means, 33
0: application layer, 331: database processing application, 332: operation management application, 333: other application, 802: migration data determination means, 8
03: Migration condition description information management means, 804
... Migration condition description information, 805 ... Migration condition designation means, 806 ... Migration execution means, 901 ... Data attribute information, 902 ... Incorporation form determination means, 903 ... Incorporation condition description information management means, 90
4 ... Incorporation condition description information, 905 ... Incorporation condition designation means, 906 ... Incorporation execution means, 1001 ... Migration execution deficiency detection means, 1002 ... Execution deficiency warning means, 1003 ... Reconfiguration request instructing means, 1004 ... Reconfiguration execution means 1005 ... Interface.

Continuation of the front page (72) Inventor Shiro Takagi 70, Yanagicho, Saiwai-ku, Kawasaki-shi, Kanagawa Prefecture Inside the Toshiba Yanagicho Plant (56) References JP-A-6-282479 (JP, A) JP-A-6-44107 ( JP, A) JP-A-5-158760 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G06F 3/06 G06F 12/00 501

Claims (3)

(57) [Claims] 1. A data storage device for managing a data group stored in a data storage medium, a file management means for logically managing the data group in a file form, and a medium comprising one or a plurality of the data storage media. A data storage device comprising a group, a media group having a plurality of media groups, and a media group management means for managing the media group independently of the file management means. 2. A data storage device for managing a data group stored in a data storage medium, wherein a plurality of media groups including one or more data storage media and a plurality of media groups including one or more media groups are provided. and means for designating the migration conditions for migrating data stored in one media group group of this to the other one of the media group set, the specified migration condition and the one media
Group information and attribute information of stored data.
And a migration execution unit that determines migration target data with reference to the data and executes migration of the data. 3. The execution failure of the migration process
Migration execution defect detecting means to be detected, and a detection result of the migration execution defect detecting means.
Alerts the operator when execution failures are detected.
Execution failure warning means and the migration execution failure detection means
The media group specified in advance when the execution failure is detected
Input of instructions to reconfigure groups or media groups
Media group requesting and receiving instructions
Reconfiguration request instructing means, and executing reconfiguration based on an instruction from the reconfiguration instructing means.
And a reconfiguration execution means.
2. The data storage device according to 2.