CN101366006A - Emulation component for data backup applications - Google Patents
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- CN101366006A CN101366006A CNA2006800467794A CN200680046779A CN101366006A CN 101366006 A CN101366006 A CN 101366006A CN A2006800467794 A CNA2006800467794 A CN A2006800467794A CN 200680046779 A CN200680046779 A CN 200680046779A CN 101366006 A CN101366006 A CN 101366006A
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Abstract
An emulation component for a data backup system is provided. The emulation component represents a storage device, such as a flash memory device or a partition of a disk drive, as if it were an auto-launch device, that will trigger applications to execute automatically. Accordingly, other computing systems, such as personal computers, interact with the storage device, through the emulation component, as if the storage device were the auto-launch device. Because the emulation component makes this representation, merely connecting the emulation component between the storage device and the computing system can cause a backup application stored on the storage device to automatically execute on the computing system. A data backup appliance including an emulation component and a storage device is also provided. The backup system can also include an interface for connecting another removable device, such as a disk drive, for storing backup content from the data source.
Description
The cross reference of related application
The title that the application requires on October 12nd, 2005 to submit to is the U.S. Provisional Patent Application No.60/725 of " A Method; Apparatusand a System for Removable Media Device Emulation on an ExternalStorage Device via an Emulation Component for the Purpose of anElectronic Data Backup Appliance ", 225 rights and interests, its full content is incorporated herein by reference.
Technical field
Relate generally to digital data management of the present invention field relates more specifically to a kind of assembly that is configured to medium apparatus is carried out the data backup applications of emulation.
Background technology
The content that replaces other form by the represented digital content of the digital data file of various file types rapidly.For example, document, displaying, photo, film and music day by day produce with increasing and are digitally stored.The problem that many individuals and mechanism run into is that the digital content that is stored in usually on the computer hard disc driver can be lost to prevent accident by bad tissue and archive needed.For example, digital photo files on the personal computer (PC) may find in many files-photo storage that transmits from digital camera is a group folders, the photo storage that receives as e-mail attachment is in other file, and the photo storage of downloading from the website is other file.
The mode that digital content is filed is periodically data files all on the computing machine to be backed up, and keeps existing institutional framework.Although this technology prevents that to the protected data content accident from losing effectively, this technology has a plurality of shortcomings.For instance, the copy that is produced is organized well unlike original, so wrong put or chaotic content still keeps mistake to put or chaotic.In addition, backing up all data files needs a large amount of memory capacity to be retained in many files in other place in addition with copy.For example, the application specific files that is loaded on the computing machine from CD (CD) has been archived on the CD at first, does not therefore need to back up.
The required memory capacity of full backup can utilize the writable data storage medium such as hard disk drive (HDD) etc. to obtain, yet this need carry out equipment assembling and software installation when being connected to system first.In order to finish these steps, the information that the user provides this user to be not easy to know possibly about existing system.And the user makes the decision about equipment and software arrangements possibly.Install and assemble the number of related step and the complicacy of some steps stops many users to take a lot of trouble on backup application.Have expense that enough capacity carry out the writable data storage medium of full backup and also make the not backup of complete of user.In addition, because the time of the system that takies during whole backup is long, some users that bought and installed the memory capacity that needs often do not carry out backup yet.
Alternatively, the user can be manually selects one group of file from catalogue, and with selected document copying in memory device.Although this alternative scheme allows not needing to install the use with the less memory device of installation step, manual select File is time-consuming.And manually select File has the possibility of some files of accidental omission.
Therefore, needed is can be with economic and mode Backup Data content optionally easily.
Summary of the invention
Provide a kind of in first device type memory device and the data source of operation system between the exemplary emulation component that uses.At this, emulation component comprises and being configured to return the logical unit of response from the inquiry of data source, wherein this response indication memory device is second device type, and described second device type belongs to when being connected to data source the trigger action system with a kind equipment type of the application program of automatic load store on memory device.As discussed further in this, the equipment that belongs to such in this article is called as " from moving loading equipment ".
A kind of another exemplary emulation component that uses between the data source and first memory device is provided.In exemplary embodiment, emulation component comprises that first logical storage that is configured to first memory device is expressed as the logical unit from moving loading equipment; And the logical unit that is configured to second logical storage of first memory device is expressed as second memory device that comprises writable data storage medium.In certain embodiments, emulation component also comprise be configured to receive from data source to carry out from moving loading equipment addressing from moving loading equipment order, the logical unit that will become first storage device commands and first storage device commands be sent to first logical storage from the moving loading equipment command translation.At this, emulation component also comprises first memory device response that is configured to receive from first logical storage, translates into the response of first memory device from the moving loading equipment response and sends the logical unit that responds data source from moving loading equipment.In certain embodiments, emulation component also comprises and is configured to receive from data source second memory device is carried out second storage device commands of addressing and sends the logical unit of second storage device commands to second logical storage, and is configured to receive from second memory device response of second logical storage and sends the logical unit that second memory device responds data source.
In certain embodiments, emulation component can be configured to first logical storage is expressed as CD driver or digital video disk (DVD) driver.Similarly, in certain embodiments, emulation component can be configured to that second logical storage is expressed as HDD, secure digital (SD) storage card, flash memory (CF) card, memory stick or comprise other memory device of writable data storage medium.The logical unit that is to be appreciated that various exemplary emulation component described herein can be realized by software, hardware, firmware or their combination.
A kind of data backup system also is provided.In exemplary embodiment, data backup system comprises communication interface; First memory device that comprises writable data storage medium; And the emulation component that between first memory device and communication interface, communicates.In this embodiment, emulation component is configured to first memory device is expressed as from moving loading equipment.Emulation component also be configured to receive from data source to carry out from moving loading equipment addressing from the moving loading equipment order, will become first storage device commands from the moving loading equipment command translation, and send first storage device commands to first memory device.Emulation component also is configured to receive first memory device response from first memory device, the response of first memory device is translated into from the moving loading equipment response, and transmission responds data source from moving loading equipment.At this, communication interface for example can comprise USB (universal serial bus) (USB) communication interface or live wire (FireWire) communication interface.First memory device for example can comprise HDD, SD storage card or Compact Flash.And emulation component can be expressed as first memory device CD driver or DVD driver.
In certain embodiments, data backup system comprises that also the movable memory equipment interface is to provide communication between emulation component and movable memory equipment.Therefore, the emulation component of data backup system can also be configured to receive from the movable memory equipment order of data source and with the movable memory equipment order and send to movable memory equipment, and this movable memory equipment order pair movable memory equipment that engages with the movable memory equipment interface carries out addressing.The movable memory equipment response concurrent that emulation component can also be configured to receive from the movable memory equipment that engages with the movable memory equipment interface send movable memory equipment to respond data source.
Description of drawings
Fig. 1 is schematically showing according to the data backup system of exemplary embodiment of the present invention;
Fig. 2 is schematically showing according to the data backup system of another exemplary embodiment of the present invention;
Fig. 3 is the process flow diagram that is used for method that the data file on the data source is backed up according to exemplary embodiment of the present invention;
Fig. 4 is the process flow diagram according to the process of exemplary embodiment of the present invention, and by this process, data source is identified as two attached equipment with data backup system.
Embodiment
For individual and commercial the application provide a kind of data backup system.Data backup system of the present invention allows according to optionally copying file to memory device from the data source of for example personal computer such as some standards of file type.For example, system can be configured to having that audio file such as the generally acknowledged music file extension name of .mp3 and .wav backs up or the image file that has such as the generally acknowledged image file extension name of .jpg .pct and .GIF being backed up.According to some embodiment, data backup system has been stored the backup application that loads automatically when data backup system is connected to data source.Backup application can be configured to seldom require or not require that the user imports carry out backup procedure.
Data backup system can be taked multiple different form.An example is the device that comprises backup application and have enough memory spaces for the file that is copied.Another example is to comprise backup application and interface, and this interface is connected to the memory storage with enough memory capacity with the memory device form such as outside HDD or flash device.In these two examples, system comprises emulation component.The part that emulation component makes data backup system comprise backup application appears to the data source with particular device type.More specifically, the backup application of data backup system partly is expressed as in the class memory device that is referred to herein as " from moving loading equipment " one.Allow data backup system to utilize the ability that automatically performs of some operating system to carry out emulation from moving loading equipment, make when equipment is connected to the data source of operation system, will automatically perform backup application.
Fig. 1 provides by connecting 120 the schematically showing of exemplary embodiment that are connected to the data backup system 100 of data source 110.Data source 110 for example can be personal computer (PC), macintosh computer (Mac) or the PDA(Personal Digital Assistant) that has data on it.Data source 110 can also comprise server, set-top box, TV, cell phone, smart phone, static digital camera or video camera, scanner, digital music player or video player, game console or personal video recorder (PVR).Preferably, data source 100 comprises that such as the operating system of Windows XP (OS) described operating system is included in the automatic value-added tax function of application program that this paper other parts go through.Other suitable operating system for example comprises MacOS, PalmOS, Linux and Unix.In fact connection 120 between standby system 100 and data source 110 can be any digital delivery structure such as optical cable or cable, wireless link or network connection.Be shown in broken lines connection 120 in Fig. 1, connecting 120 with expression is temporary needs.
As shown in Figure 1, standby system 100 comprises communication interface 130, emulation component 140 and memory device 150, and described memory device 150 comprises first logical storage 160 and second logical storage 170.Communication interface 130 allows data source 110 to communicate according to the emulation component 140 of communication protocol and standby system 100.Communication interface 130 for example can be USB, FireWire or such as the wave point of infrared, bluetooth or WiFi.
Can recognize that standby system 100 can comprise that a plurality of communication interfaces 130 of identical or different type are to adapt to a plurality of and/or different data source 110.According to the type of communication interface 130, communication interface 130 can comprise communication port, proceeds to the connection 120 of data source 110 by described communication port.For example, usb communication interface 130 can comprise the usb communication port, and FireWire communication interface 130 can comprise the FireWire communication port.Alternatively, communication interface 130 can comprise wireless antenna or be used to send and receive the infrared transmitter/acceptor unit of infrared signal.
Can also realize 150, one device-specific of memory device in two logical storage 160,170 by two different equipment.For example, first logical storage 160 can realize by the CD driver with any CD medium, and second logical storage 170 realizes by HDD.Should be appreciated that the device type, formative factor and the capacity that provide at this only are exemplary and be not to limit.
In certain embodiments, standby system 100 also comprises storage device interface 190, described storage device interface 190 allow first and second logical storage 160 and 170 and emulation component 140 communicate.In these embodiments, storage device interface 190 is the types that are fit to the type of memory device 150.For example, integrated drive electronics (IDE) interface 190 can use with IDE HDD memory device 150, and the interface 190 of small computer system interface (SCSI) type can use with SCSI HDD memory device 150.Alternatively, when memory device 150 was the SD storage card, storage device interface 190 can be a SD storage card host interface.Interface 190 can also be the wave point such as infrared, WiFi and bluetooth.Storage device interface 190 can be implemented in the standby system 100 by integrated circuit (IC) chip or the use by discrete assembly.In certain embodiments, storage device interface 190 is integrated in the memory device 150.Should be realized that in the embodiment of a plurality of memory devices 150 of above-mentioned use standby system 100 can suitably comprise a plurality of storage device interfaces 190.
First logical storage 160 is represented user's inaccessible of memory devices 150 and is avoided the logic region of accidental erasure safely.First logical storage 160 can comprise for example backup application, system file, driver and other installation and configuration software.By emulation component 140 first logical storage 160 is expressed as from moving loading equipment to data source 100.As used in this, be those equipment that trigger such as the automatic executing function of the specific operation system of the AutoPlay function of the Windows of Microsoft operating system from moving loading equipment.The example of the device type of the automatic operation of triggering Windows comprises CD and DVD driver.
The logic region that is exclusively used in store backup data of second logical storage, 170 expression memory devices 150.Correspondingly, emulation component 140 is expressed as the device type that comprises writable data storage medium with second logical storage 170 to data source.For example, second logical storage 170 can be represented HDD, CF or SD storage card.In certain embodiments, second logical storage 170 can be represented the device type identical with memory device 150.In other embodiments, second logical storage 170 can be expressed as the device type different with memory device 150.
In one embodiment, emulation component 140 comprises IC.For example, emulation component 140 can use the software that is incorporated into USB controller chip group, firmware, hardware or they some make up and realize.In the embodiment of some USB special uses, emulation component 140 is realized some or all of in the industrial standard of a plurality of layerings.The example of this standard comprises USB standard-correction 2.0, the USB mass storage class-only transmission-correction 1.0, SCSI mainly order-3 (SPC-3), SCSI block command-2 (SBC-2), multimedia order-4 (MMC-4) and AT annex and packet interface-6 (ATA/ATAPI-6) in batches.Should be noted that in certain embodiments emulation component 140 can only be supported the subclass of these industrial standard orders.
The function that is provided by emulation component 140 can comprise first logical storage 160 is expressed as from moving loading equipment and with second logical storage 170 and is expressed as the equipment that comprises writable data storage medium.Therefore, data source 110 is identified as data backup system 100 two attached equipment when being connected to standby system 100.Yet, should be noted that in certain embodiments, the content of these two equipment is an inaccessible to the user of data source, but can visit by calling the backup application that disposes with suitable applications DLL (dynamic link library) (API).This is in order to protect the two content of first and second logical storage and avoid accidental modification or to wipe.In certain embodiments, in order to visit the Backup Data from second logical storage 170, data backup system 100 returns to data data source or copying data is arrived another equipment.In other embodiments, represent that the virtual unit of second logic region 170 is addressable to the user, and represent that the virtual unit of first logic region 160 is inaccessibles.In these embodiments, allow the user directly to visit the content of second logical storage 170, and do not allow directly to visit the content of first logical storage 160.
Another function that emulation component 140 can provide is to translate between the order of multiple form and response, as between the command set of HDD and CD driver.Like this, when data source 110 will send to standby system 100 to the order from moving loading equipment (represented as first logical storage 160) addressing, emulation component 140 will be ordered before order being sent to first logical storage 160 from become the suitable form of memory device 150 from the moving loading equipment format translate.Similarly, be translated into from the moving loading equipment form with the response from first logical storage 160 of the form of memory device 150, and send to data source 110, thereby this response is rendered as from from moving loading equipment.
Should be noted that the translation between the form of CD driver and HDD only is an example, and in certain embodiments, emulation component 140 can be realized one or more similar format translates.As used in this, " storage device commands " is meant the order with the suitable form of particular storage device, and " memory device response " is meant the response with same format.As concrete example, " from the moving loading equipment order " is meant the order with specific suitable form from moving loading equipment, and " from the moving loading equipment response " is meant the response with same format.
The another function that is provided by emulation component 140 is to transmit order and response between the data source 110 and second logical storage 170.When the order that is received by emulation component 140 had been the suitable form of memory device 150, emulation component 140 needn't translator command or response.At this, emulation component 140 receives the order of the equipment that comprises writable data storage medium being carried out addressing from data source 110, and order is sent to second logical storage 170.In mode similarly, under the situation that does not have translation, will respond relaying and turn back to data source 110.Should be realized that emulation component 140 can be configured to second logical storage 170 is expressed as the device type different with the device type of memory device 150.In certain embodiments, emulation component 140 is configured to translate between the form of the device type of second logical storage 170 expression and memory device 150.
Fig. 2 provides the schematically showing of another exemplary embodiment of data backup system 200, and described data backup system 200 is the same with data backup system 100, also is connected to data source 110 by connecting 120.The same with data backup system 100, standby system 200 also comprises communication interface 130 and emulation component 140.In this embodiment, standby system 200 also comprises memory device 210, and described memory device 210 comprises writable data storage medium and suitable storage device interface 220.Because the writable data storage medium of memory device 210 only need comprise enough memory capacity and come storage backup application program etc., so standby system 200 can have such as the quite little form factor pocket size or Dao Er chip (dongle), perhaps can be embedded in some the miscellaneous equipment configurations such as joint or support.
Should be realized that, because the file that is copied not is to store the memory device that is associated with data backup system 200 into, so movable memory equipment interface 230 is optional.Alternatively, the copied files that can store of backup application is directed to the existing inner drive or the peripheral driver of data source or is directed to network drive.In another option, backup application can send the file that copied to be stored in based on network memory device in the Internet (Internet) connection.
Do not comprise that display is to reduce cost and to increase the durability of standby system 100,200 though should be noted that some embodiment for example, but standby system 100,200 can comprise display or such as other visual detector of light emitting diode (LED), be copied so that file to be shown.The power supply that standby system 100,200 can be used battery, external power source (for example, AC power supplies outlet) or be provided with data source 110.In certain embodiments, connection 120 is the cables as the part of standby system 100,200.Standby system 100,200 can also be configured to be designed to accept the support of movable equipment 240 or data source 110, and wherein data source 110 is the consumer-elcetronics devicess such as digital camera.
Fig. 3 is the process flow diagram that is used for illustrative methods 300 that the data file from data source is backed up.Method 300 comprises: the data backup system (310) that the memory device that comprises the storage backup application program is provided, data backup system is connected to data source with automatic loading backup application (320), and optionally from data source copies data file (330).
Providing data backup system (310) for example can comprise provides data backup system 100 or data backup system 200.In those embodiment of data backup system 200 are provided, provide data backup system 200 (310) for example can comprise movable memory equipment 240 is connected to communication port 250.At movable memory equipment 240 is under the situation of for example SD or Compact Flash, movable memory equipment 240 is connected to communication port 250 can comprises storage card is inserted into communication port 250.Alternatively, be under the situation of HDD at movable memory equipment 240, movable memory equipment 240 is connected to the connection that communication port 250 can comprise use such as cable or wireless link communication port 250 is coupled to movable memory equipment 240.
Reference data standby system 100,200 is connected to data source 110 (320) with data backup system 100,200 and can comprises that use connecting 120 is coupled to data source 110 with communication interface 130.Data backup system is connected to data source (320) comprises that also data source is identified as two new equipments with data backup system.For example, the inquiry of certain operations system cycle ground is used for the untapped port of newly attached hardware.Illustrate that below with reference to Fig. 4 data source 110 is identified as data backup system 100,200 the exemplary process of two attached equipment.
Data backup system is connected to data source (320) can automatically loads backup application.Comprise such as the operating system of the automatic executing function of the automatic service ability of Windows operating system and can carry out the application program that is on moving loading equipment.At this, the automatic executing function of the operating system of data source is identified as the application program that will load with backup application, and loads backup application automatically to move on data source.
As the discussion of top function about emulation component 140,, data backup system is connected to data source (320) also is included between the order of plurality of devices form and the response and translates because communication transmits between data source and data backup system.Thereby for example, the CD reading order that sends to standby system 100 was translated into the HDD reading order before being sent to first logical storage 160.
Optionally can be included in data source from data source copies data file (330) and move backup application, wherein backup application is configured to the one or more memory devices that are associated with data source are searched for.In certain embodiments, backup application can be searched for the catalogue of the network drive that internal storage device, External memory equipment and data source can visit.Backup application optionally copies files to the memory device that comprises such as the writable data storage medium of second logical storage 170 or movable memory equipment 240.
The backup application selection is satisfied such as file type (for example .jpg) or content type (for example, the audio file file of) specific preassigned, and the file that does not copy before only copying in certain embodiments.Other example of content type comprises Email, commercial application data (for example, Accpac and simple accounting file), digital video file, electronic book documentary, contact person's file, Cal. Files, text, assignment file, file, bookmark file and cryptogram is set.Optionally copies data file (330) can also comprise by searching for the file that satisfies preassigned to e-mail attachment with to the file search that is embedded in other file such as the compressed file in the .zip file.In certain embodiments, backup application can be created file that file path or bibliographic structure copied with the indication position in data source on the writable data storage medium of data backup system.
Should be realized that and to reduce user's participation, so that set up the physical connection between data backup system and the data source simply according to method 300.Although the user can be participated in reducing to one or more shirtsleeve operations, should be realized that can be by offering user with option by the graphic user interface (GUI) that backup application provided on the display device of data source.Like this, if the user needs, just can come the customization backup process by the search criterion of specifying the file type that maybe will copy such as content type.In addition, the user can stab the scope that limits backup procedure by driver, catalogue, file, file type, file size or date, and perhaps the user can cancel the type of chosen content or specific file, driver, catalogue or such as the file of temporary folder or Internet Explorer (Internet Explorer) catalogue.
As described, from data source optionally copies data file (330) can be included in data source and move backup application.Except the above-mentioned functions of backup application, backup application can also be configured to carry out following function with as the part of copies data file (330) optionally.For example, as long as standby system remains connected to data source 110, backup application can be waited for preset time length, repeats backup procedure then.Backup application can also be carried out the self diagnosis routine with predetermined interval.Backup application can also be configured to wait for that the preset time section is so that provide the chance of customization backup process for the user before carrying out automated back-up.In addition, backup application only can be configured to when receiving user command optionally copies data file (330) rather than copies data file (330) optionally automatically.Can inputting user command by the GUI on the data source, perhaps can provide user command by button on the data backup system or switch.Alternatively, backup application can be configured to as long as movable memory equipment 240 is connected to just copies data file (330) optionally of communication port 250.
In certain embodiments, copies data file (330) comprise the specified data source before whether with data backup system pairing (for example, data source had before used data backup system to back up).For example, this can comprise that search before stayed the mark on the data source, and perhaps the mark that will preserve on data backup system compares with identifier such as the data source of label.Mark allows the backup application identification data source.In certain embodiments, whether backup application before came definite process of moving with the data backup system pairing based on data source, and if matched, then whether the specified data standby system has stored the data that are associated with data source.For example, the process of action can be the automatic full backup of data source or increase backup, backed up data is returned to data source, but or the inquiry user between these modes or other alternative mode, select.
Fig. 4 is the process flow diagram of exemplary method 400, by described method 400, in case data backup system is detected, then is identified as two attached equipment by data source.Though with reference to usb protocol this exemplary method 400 is described, should be appreciated that such as other agreement of FireWire and also can similarly handle.Method 400 comprises that data source enumerates (410) to the data standby system, and the emulation component of subsequent data standby system is represented two logical unit number (420) by initialization.
Execution to the enumerating of data standby system (410) with discern new attached hardware, in this case data backup system and how configure hardware communicates.Enumerate (410) and comprise that data source is distributed unique device number and to data backup system inquiry unit descriptor.Emulation component responds by device descriptor is offered data source.Enumerate (410) and comprise that also data source is provided with the address of data backup system.When the address was set up, data backup system obtained to distribute to the communication frame of this address.Enumerate (410) and can also comprise that data source is specially to be specially from emulation component to the emulation component request with from data backup system to data backup system and receive detailed facility information, such as class, subclass and agreement.
Enumerate (410) and comprise that also data source starts suitable USB mass storage class driver, described USB mass storage class driver is with the next number to data backup system request LUN of " obtaining the largest logical unit number " (GET MAX LOGICALUNIT NUMBER) order.Enumerate (410) also comprise data backup system more specifically emulation component by two LUN are sent to data source respond " obtaining the largest logical unit number " order.
Represent that by initialization two LUN (420) comprise that emulation component receives a plurality of scsi commands that point to each LUN from data source.Emulation component is handled each LUN independently.Those scsi commands of its identification of emulation component responds, and the generation standard error condition responds Unidentified scsi command.Each scsi command and any mistake that is produced are processed before next scsi command is issued each LUN usually.Should be appreciated that, send to expression and comprise that the sequence of scsi command of LUN of the memory device of writable data storage medium can be with to send to expression different from the sequence of the scsi command of the LUN of moving loading equipment.In addition, the sequence of scsi command or scsi command can repeatedly be repeated by data source, and the sequence of pointing to the scsi command of two LUN can be interlocked.
For these two LUN, the sequence of scsi command starts from the USB mass storage class driver and sends " inquiry " and (INQUIRY) order with the identification equipment type.Emulation component returns response being expressed as the memory device that comprises writable data storage medium such as the memory device of second logical storage 170 (Fig. 1).For example the response of " 0x00 " indication memory device is HDD.Similarly, emulation component returns response being expressed as from moving loading equipment such as the memory device of first logical storage 160 (Fig. 1).For example the response of " 0x05 " indication is the CD driver from moving loading equipment.The memory device that comprises writable data storage medium can also be marked as " movably " or " immovable ", and can be marked as " movably " from moving loading equipment.After this, the sequence of the scsi command of two LUN separately.The order that should be realized that the scsi command in the sequence that is described below is exemplary, and the order of scsi command changes with different data sources.And, in some instances, one or more scsi commands that provided below can omitting, and/or can comprise other scsi command.
Sensing comprises that the exemplary sequence of scsi command of the memory device of writable data storage medium proceeds to data source and is used for determining whether writable data storage medium is not formative " reading format capacity " (READ FORMAT CAPACITIES) request.Usually, the medium of represented memory device is formatted, and emulation component correspondingly responds.Otherwise data source will attempt the medium of memory device is formatd.Next, data source is sent capacity and the piece size thereof of " reading capacity " (READ CAPACITY) request with the identification writable data storage medium, and emulation component also returns this information.Send " reading (10) " (READ (10)) order to read first on the writable data storage medium.First has is LBA (Logical Block Addressing) (LBA) value of zero (LBA=0), and comprises Main Boot Record (MBR), and Main Boot Record self comprises the partition table of writable data storage medium.Emulation component responds with the content of the piece of being asked.
Then, use " pattern is read (6) " (MODE SENSE (6)) order to extract the ability of the memory device that comprises writable data storage medium, whether comprise disk cache as memory device.Emulation component is suitably answered the ability of represented memory device.Send another order of " reading (10) " first with the file system of recovering to comprise root directory.First of file system for example can be positioned at the LBA=0x3F place, but can change according to the particular type of represented file system.First of emulation component backspace file system.At last, data source can be sent " test cell is ready " (TEST UNIT READY) request before the full content that reads root directory etc.At this, emulation component responds for certain, makes data source will comprise that the memory device of writable data storage medium regards as exercisable.After this, data source is sent more read as required.
Sensing proceeds to " obtain configuration " (GET CONFIGURATION) request to obtain about from the information of the ability of moving loading equipment and the ability that for example dissimilar optical medium of CD-R, CD-RW, recordable digital video disk (DVD+R), DVD-RW etc. is read or write thereof from the exemplary sequence of the scsi command of moving loading equipment.Emulation component is with responding from the suitable ability of moving loading equipment the data source-representation.Be whether " reading capacity " request has medium to occur in moving loading equipment to be illustrated in subsequently.Emulation component is configured to respond by initial trial is failed.In response, data source will be sent the error message of " request is read " (REQUEST SENSE) order with the visit expansion.In answer, emulation component is arranged to " unit is noted " (UNITATTENTION) with " reading key ", and " additional read the code " is arranged to " energising " (POWER ON).Data source will repeat " reading capacity " request then, and emulation component responds with the capacity such as the size of first logical storage 160 (Fig. 1).
In order to understand the type that state that read-only medium equipment supports changes incident, data source is sent initial " obtaining the state-event notice " (GET EVENT STATUS NOTIFICATION) request, and emulation component responds with the mode field of a group coding.Then, check under the situation that is configured to the status bar destination field that data source can repeat " obtaining the state-event notice " request.For example, if the mode of operation field is enabled, then emulation component responds with the state code that operation change incident and representation feature change.This response can further be sent " obtaining configuration " request so that having which characteristic change is shown under the situation of characteristic change in the trigger data source.
Data source can also be sent " pattern is read (10) " (MODESENSE (10)) request that is used for a page code (0x2A), promptly known " MM ability and machine performance page or leaf ".Emulation component will use the simple of the read-only support that comprises CD-R and CD-RW medium responded from the representative information of moving loading equipment.The information that this returns in response to response " obtains disposing " request.
Here, data source can be sent " test cell is ready " order.Two sequences of this trigger request/response events in the emulation component of the automatic executing function that can support different operating system.Order in two sequences can interlock, and incident will keep unsettled up to emulation component by till the state of all expectations.Summarize as following, these two sequences are typical for the operating system such as Windows XP.Back, sequence do not illustrate the number of times that the sequence of request or request can be repeated.And the concrete sequence of incident can change according to the type and the version of the operating system of carrying out on data source.Can also send order additional or that replace.
First sequence comprises from data source to a series of " test cell the is ready " order from moving loading equipment.Emulation component is configured to make the first request failure.Data source sends " request is read " order obtaining the error message of expansion then, and under the situation of the additional read the code of " not having medium ", emulation component is arranged to reading key " unripe " (NOT READY).Then, data source repeats " test cell is ready " order, and emulation component makes this " test cell is ready " order failure once more.Data source is sent " request is read " order and emulation component once more and is responded with the additional read the code of the reading key of being arranged to " unit is noted " and " medium may change " (MEDIUM MAY HAVE CHANGED).All subsequently " test cell is ready " orders respond under the situation that does not have mistake usually.
Second sequence comprises from data source to a series of " obtaining the state-event notice " request from moving loading equipment.After first " test cell the is ready " order that triggers first sequence, data source is sent " obtaining the state-event notice " request under the situation that the operation change field is enabled.Emulation component responds with state code and the operation change incident that representation feature changes.For " obtaining the state-event notice " request subsequently, the medium state field is enabled.Emulation component responds with media event, the state code of expression new medium and the sign of being arranged to indicate medium to exist.For all follow-up " obtaining the state-event notice " requests when the medium state field is enabled, emulation component sign occurs with media event and set medium and responds, but state code is not indicated new medium.Under the situation that the mode field of sending " obtaining the state-event notice " request and expectation is not enabled, emulation component suitably responds the current state of incident.
The ending of any one sequence in these two sequences or this two sequences, data source can send " reading TOC/PMA/ATIP " (READ TOC/PMA/ATIP) request with from reading of content table (TOC) from the medium of moving loading equipment.TOC comprises the information of the reference position of the number that gets on the right track about medium and each track.Emulation component responds with the individual data track that the clauses and subclauses of default configuration promptly start after introducing the zone immediately.First of data on the acquiescence TOC statement medium begins at the address zero place.The stationkeeping of last track is in emulation component, and the space such as the data on moving loading equipment of backup application is distributed in expression.
Carry out when reading of moving loading equipment asked when data source, emulation component is translated into logical address the respective physical address of the memory device (for example first logical storage 160 (Fig. 1)) that is represented as from moving loading equipment automatically.In addition, when be represented as from moving loading equipment (for example, the CD driver piece size of) memory device (for example HDD subregion) not simultaneously, emulation component is also translated into needed amount from the moving loading equipment data suitable number of the piece on the memory device.
After method 400 finished, data source was identified as a LUN from moving loading equipment and with another LUN and is identified as the memory device that comprises writable data storage medium, and suitably is configured to communicate independently with each equipment.After this, can begin from data source copies data file (330) optionally.As mentioned above, this operating system that can comprise data source loads automatically from the backup application that is represented as from the LUN of moving loading equipment, and will write the LUN that is represented as memory device that comprises writable data storage medium from the data that data source is selected.
In aforesaid explanation, present invention is described with reference to certain embodiments, still those skilled in the art will recognize that to the invention is not restricted to the disclosed embodiments.The various features of above-described invention and aspect can be used individually or in combination.In addition, except those environment described herein with using, can under the situation of the spirit and scope of the broadness that does not deviate from this instructions, use the present invention at any environment with in using.Correspondingly, this instructions and accompanying drawing are considered and are exemplary and not restrictive.Should be realized that at this employed term " comprise ", " comprising " and " having " should specifically be understood as open technical term.
Claims (25)
1. emulation component that between the data source of the memory device of first device type and operation system, uses, described emulation component comprises:
Be configured to return the logical unit of response from the inquiry of described data source, it is second device type that described memory device is indicated in described response, and described second device type belongs to trigger the kind equipment type of described operating system with the application program of automatic load store on described memory device when being connected to described data source.
2. emulation component according to claim 1, wherein said inquiry are the small computer system interface inquiry commands.
3. emulation component according to claim 1, wherein said first device type is a hard disk drive.
4. emulation component according to claim 3, wherein said second device type is a CD drive.
5. emulation component according to claim 3, wherein said second device type is the digital video disk driver.
6. emulation component according to claim 1, wherein said logical unit comprises firmware.
7. emulation component that between the data source and first memory device, uses, described emulation component comprises:
Be configured to first logical storage with described first memory device and be expressed as logical unit from moving loading equipment; And
Be configured to second logical storage of described first memory device is expressed as the logical unit of second memory device that comprises writable data storage medium.
8. emulation component according to claim 7 also comprises:
Be configured to receive from described data source to described from moving loading equipment carry out addressing from the moving loading equipment order, become first storage device commands and send the logical unit of described first storage device commands from the moving loading equipment command translation to described first logical storage with described; And
Be configured to receive first memory device response, will described first memory device response translate into and respond and send the described logical unit that responds described data source from moving loading equipment from moving loading equipment from described first logical storage.
9. emulation component according to claim 8 also comprises:
Be configured to receive described second memory device is carried out second storage device commands of addressing and sends the logical unit of described second storage device commands to described second logical storage from described data source; And
Second memory device that is configured to receive from described second logical storage responds and sends the logical unit that described second memory device responds described data source.
10. emulation component according to claim 7 wherein is configured to first logical storage with described first memory device and is expressed as described logical unit from moving loading equipment described first logical storage is expressed as CD drive.
11. emulation component according to claim 7 wherein is configured to first logical storage with described first memory device and is expressed as described logical unit from moving loading equipment described first logical storage is expressed as the digital video disk driver.
12. emulation component according to claim 7 wherein is configured to the logical unit that second logical storage with described first memory device is expressed as described second memory device described second logical storage is expressed as hard disk drive.
13. emulation component according to claim 7 wherein is configured to the logical unit that second logical storage with described first memory device is expressed as described second memory device described second logical storage is expressed as the secure digital storage card.
14. emulation component according to claim 7 wherein is configured to the logical unit that second logical storage with described first memory device is expressed as described second memory device described second logical storage is expressed as flash-storing card.
15. a data backup system comprises:
Communication interface;
First memory device that comprises writable data storage medium; And
The emulation component that between described first memory device and described communication interface, communicates, and described emulation component is configured to:
Described first memory device is expressed as from moving loading equipment;
Reception from data source to described from moving loading equipment carry out addressing from the moving loading equipment order, become first storage device commands with described from the moving loading equipment command translation, and send described first storage device commands to described first memory device; And
Reception is from the response of first memory device of described first memory device, will described first memory device response translates into from moving loading equipment to respond, and sends and describedly respond described data source from moving loading equipment.
16. data backup system according to claim 15 also comprises the movable memory equipment interface.
17. data backup system according to claim 16, wherein said emulation component also is configured to:
Reception is from the movable memory equipment order of described data source and send described movable memory equipment order to movable memory equipment, and the described movable memory equipment order pair described movable memory equipment that engages with described movable memory equipment interface carries out addressing; And
Reception send described movable memory equipment to respond described data source from the movable memory equipment response concurrent of described movable memory equipment.
18. data backup system according to claim 15, wherein said communication interface comprises the USB (universal serial bus) communication interface.
19. data backup system according to claim 15, wherein said communication interface comprises the live wire communication interface.
20. data backup system according to claim 15, wherein said first memory device comprises hard disk drive.
21. data backup system according to claim 15, wherein said first memory device comprises the secure digital storage card.
22. data backup system according to claim 15, wherein said first memory device comprises flash-storing card.
23. data backup system according to claim 15, wherein said emulation component is expressed as CD drive with described first memory device.
24. data backup system according to claim 15, wherein said emulation component is expressed as the digital video disk driver with described first memory device.
25. an emulation component that uses between the data source of the memory device of first device type and operation system, described emulation component comprises:
Be used for return the device of response from the inquiry of described data source, it is second device type that described memory device is indicated in described response, and described second device type belongs to trigger the kind equipment type of described operating system with the application program of automatic load store on described memory device when being connected to described data source.
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| US72522505P | 2005-10-12 | 2005-10-12 | |
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| CNA2006800467794A Pending CN101366006A (en) | 2005-10-12 | 2006-10-12 | Emulation component for data backup applications |
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| CNA2006800466594A Pending CN101366011A (en) | 2005-10-12 | 2006-10-12 | Data backup devices and methods for backing up data |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103514114A (en) * | 2012-06-25 | 2014-01-15 | 国际商业机器公司 | Source cleaning cascaded volumes |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010111694A2 (en) * | 2009-03-27 | 2010-09-30 | Sandforce Inc. | Storage system logical block address de-allocation management and data hardening |
| CN104317675B (en) * | 2014-11-21 | 2017-08-11 | 华为技术有限公司 | The disaster tolerance treating method and apparatus of application |
| CN104679556B (en) * | 2015-02-06 | 2019-01-08 | 深圳市硅格半导体有限公司 | Application program method for burn-recording and system |
| CA3080203A1 (en) * | 2017-10-26 | 2019-05-02 | Urflash Llc | Media storage device including multiple partitions |
| CN110109891B (en) * | 2018-01-18 | 2023-04-21 | 伊姆西Ip控股有限责任公司 | Method, apparatus and storage medium for data migration |
| CN109871185A (en) * | 2019-03-06 | 2019-06-11 | 电子科技大学 | A method of blue light array data reading efficiency is improved using caching technology |
| CN112825054B (en) * | 2019-11-21 | 2023-09-05 | 杭州海康威视数字技术股份有限公司 | Data processing method and electronic equipment |
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2006
- 2006-10-12 CN CNA2006800466594A patent/CN101366011A/en active Pending
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103514114A (en) * | 2012-06-25 | 2014-01-15 | 国际商业机器公司 | Source cleaning cascaded volumes |
| CN103514114B (en) * | 2012-06-25 | 2016-09-14 | 国际商业机器公司 | Source clean cascaded volume |
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