JP2014049152A - Information processing device and information processing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an information processing device capable of easily migrating a disk housing unit even when data is recorded over a plurality of media sets.SOLUTION: An information processing device of an embodiment includes recording means and migration processing means. The recording means records first identification information, a first data block and first management information for managing recording destinations for the first and second data blocks for a first media set and in addition records second identification information, the second data block and the first management information for a second media set. The migration processing means records the first identification information recorded in the second media set that is a migration source, the first data block and the first management information for a third media set as a migration destination and records migration information indicating that migration is finished for the second media set.

Description

  Embodiments described herein relate generally to an information processing apparatus and an information processing method.

  A unique identifier is assigned to a disk storage unit storing a plurality of optical disks, the disk storage unit is managed by the identifier, and when recording data across a plurality of disk storage units, the plurality of disk storage units A technology has been proposed in which a unit cooperation identifier is assigned to each of these, and the plurality of disk storage units are managed by the unit cooperation identifier.

JP 2010-40100 A

  When recording data across a plurality of disk storage units, the same management information was recorded on each of the plurality of disk storage units, and the data was recorded straddling on the basis of the management information recorded on a certain disk storage unit. Data can be read from a plurality of disk storage units and reproduced. For example, the management information includes identification information assigned to each of the plurality of disk storage units.

  For example, when the quality of one disk storage unit of the plurality of disk storage units deteriorates, the data of the disk storage unit with the deteriorated quality may be migrated to another disk storage unit. .

  However, simply migrating the data of a disk storage unit whose quality has deteriorated to another disk storage unit, there are a plurality of disk storage units on which the same data is recorded, and there is a risk of confusion in subsequent recording and reproduction. .

  An object of the present invention is to provide an information processing apparatus and an information processing method capable of easily realizing migration of a disk storage unit even when data is recorded across a plurality of disk storage units (a plurality of media sets). It is.

  The information processing apparatus according to the embodiment includes a recording unit and a migration processing unit. For the first media set composed of a plurality of media, the recording means includes first identification information and the first of the first and second data blocks constituting the first recording target data. One data block and first management information for managing recording destinations of the first and second data blocks are recorded, and a second media set composed of a plurality of media is recorded with respect to a second media set. 2 identification information, the second data block, and the first management information are recorded. The migration processing means uses a third media set composed of a plurality of media as a migration destination, and the first media recorded in the second media set as a migration source with respect to the third media set. Identification information, the first data block, and the first management information are recorded, and migration information indicating that migration has been completed is recorded for the second media set.

It is a figure which shows an example of the migration process performed by the information processing system which concerns on embodiment. It is a figure which shows an example of the data recording process which records data over a some media set. It is a figure which shows the case where media set ID is updated by a migration process. It is a figure which shows the case where many media sets are updated by a migration process. It is a figure which shows an example of the data recording process performed by the information processing system which concerns on embodiment. It is a figure which shows the case where all the media sets are updated by a migration process. It is a figure which shows an example of the migration process performed by the information processing system which concerns on embodiment. It is a figure which shows an example of the management information recorded by the information processing system which concerns on embodiment. It is an external view which shows the connection structure of the information processing system which concerns on embodiment. 1 is a block diagram illustrating a schematic configuration of an information processing system according to an embodiment. 1 is a block diagram illustrating a schematic configuration of an information processing system according to an embodiment.

  Hereinafter, embodiments will be described with reference to the drawings.

  FIG. 9 is a diagram illustrating an example of an information processing system according to the embodiment. As illustrated in FIG. 9, the information processing system includes a storage device 100 and a PC 200. The storage apparatus 100 includes a plurality of optical disk drives (recording means, reproducing means, migration means) connected in parallel. For example, the storage apparatus 100 is configured by five BD-R drives connected in parallel. In the present embodiment, a case where five BD-R drives connected in parallel are applied will be described. However, not only BD-R but also various media (for example, various write-once media) are used as recording media. Can be applied.

  When the storage device 100 is connected to the PC 200, the storage device 100 can be configured in the same way as HDD RAID, etc. by incorporating dedicated drivers (Driver Top, Driver Bottom) into five BD-R drives connected in parallel. , Masquerades 5 BD-R drives (5 BD-R media) as one large-capacity storage device. As a result, the PC 200 replaces 5 BD-R drives in the storage device 100 with one BD-R drive. Treat as mass storage.

  Next, a recording process flow of the information processing system according to the embodiment will be described with reference to FIG. FIG. 10 is a block diagram showing a schematic configuration of the entire system including the PC 200 and the storage apparatus 100. The PC 200 includes application software, an operating system (OS), and a file system. The storage device 100 includes built-in dedicated drivers (Driver Top, Driver Bottom), BD Drive1, BD Drive2, BD Drive3, BD Drive4, and BD Drive5.

  In the application software, recording data to be recorded and a recording destination are designated. From the hierarchy above the dedicated driver, that is, from the application software, OS, and File System in FIG. 10, the recording destination appears as one large-capacity storage, so the recording data is sent from the application software, OS, and File System to the dedicated driver. When recording, a recording destination corresponding to each of the five BD Drives is not indicated, but a recording destination corresponding to a large-capacity storage is indicated. To actually record in each Drive, it is necessary to convert the recording destination and recording data corresponding to the large-capacity storage into the recording destination and recording data corresponding to each Drive, and this processing is performed by a dedicated driver.

  FIG. 11 is a block diagram illustrating a schematic configuration of the information processing system according to the embodiment. As described above, the information processing system includes the storage device 100 and the PC 200. The information processing system can record (simultaneously record) a plurality of files in parallel on a plurality of recording media (a plurality of recording destinations). Furthermore, the information processing system can read a plurality of files in parallel from a plurality of recording media (simultaneous reading), and reproduce data based on the plurality of read files.

  Various media such as an optical disk, a magnetic disk, and a flash memory can be applied as the recording medium. Hereinafter, a case where an optical disk is applied as a recording medium will be described.

  As shown in FIG. 11, the PC 200 of the information processing system includes an input unit 10, a sub control module 20, a main control module (control means) 30, a display unit 40, a memory 50, an HDD (hard disk drive) unit 70, and a power supply unit 80. It has.

  The sub control module 20 includes an input detection module 21, a power control module 23, a display control module 22, and a power control module 23. The main control module 30 includes a recording / playback processing module 31, a file processing module 32, and an input / output control module 33. The main control module 30 transmits display data to be displayed by the display unit 40 to the display control module 22. The display control module 22 controls the display unit 40 based on the display data. Thereby, the display part 40 can display the display information corresponding to display data.

  For example, the input unit 10 is provided with a power key, a recording key, a reproduction key, and the like. The user can control the operation of the information processing system by an input operation on the input unit 10.

  The power key is a key for instructing power on / off of the information processing system. When the power key is depressed, the depression of the power key is detected by the input detection module 21 of the sub-control module 20, and the power control module 23 of the sub-control module 2 notifies the power supply unit 80 of power on / off switching. To do. The power supply unit 80 turns on the power if the power is off, and turns off the power if the power is on.

  The storage apparatus 100 includes, for example, BD Drive1, BD Drive2, BD Drive3, BD Drive4, and BD Drive5, and records data on one or five optical disks, or data recorded on one or five optical disks. Can be read out. For example, BD Drive 1 processes an optical disk stored in magazine 1a, BD Drive 2 processes an optical disk stored in magazine 2a, BD Drive 3 processes an optical disk stored in magazine 3a, and BD Drive 4 The optical disk stored in the magazine 4a is processed, and the BD Drive 5 processes the optical disk stored in the magazine 5a.

  Further, RFID (Radio Frequency IDentification) is given to the magazine 1a. The RFID includes identification information of a magazine to which the RFID is attached, identification information of an optical disk stored in the magazine, information on the type of the optical disk, and the like. The magazine identification information is a magazine production lot number or a serial number. The identification information of the optical disk is an optical disk manufacturing lot number or a serial number. The magazines 2a to 5a are similarly assigned RFID.

  The input / output control module 33 receives one or a plurality of files provided from the outside and outputs them to, for example, the HDD drive unit 7. Thereby, the HDD drive unit 7 can record one or more files provided from the outside on the hard disk. The input / output control module 33 can also receive one or more files provided from the outside and output them to the storage apparatus 100. Thereby, the storage apparatus 100 can record one or a plurality of files provided from the outside on one or a plurality of media. Further, the input / output control module 33 can receive one or a plurality of files recorded on the hard disk and output them to the storage apparatus 100. Thereby, the storage apparatus 100 can record one or more files recorded on the hard disk on one or more media.

  Next, an outline of information recording by the information processing system will be described.

  A plurality of recording media may be considered as one large-capacity storage and recording target data may be recorded in the large-capacity storage. That is, a plurality of data blocks generated from the recording target data are recorded on each recording medium. When the data size of the recording target data is large or when it is desired to record the recording target data redundantly, the recording to the large-capacity storage as described above is performed.

  For example, if a large-capacity storage composed of a plurality of recording media is defined as a media set, data may be recorded across the plurality of media sets. For example, when the free space of the first media set is small, a part of the data may be recorded in the free space of the first media set and the rest of the data may be recorded in the second media set.

  In this case, the information processing system adds (records) a unique ID (hereinafter referred to as a media set ID) to each media set as shown in FIG. 2, and provides management information for managing the media set ID of each media set. Generate and record management information on each media set. The management information is recorded in each media set in consideration of the case where the media set is a replaceable portable medium. Thereby, it is possible to detect all media set IDs necessary for reproduction even for media sets in which data is recorded across other systems. These methods are already known techniques according to Japanese Patent Application Laid-Open No. 2010-40100.

  Note that the media set ID may be recorded on one of the plurality of recording media constituting one media set, or two or more of the plurality of recording media constituting one media set may be recorded. A media set ID may be recorded on each medium. Similarly, management information may be recorded on one of a plurality of recording media constituting one media set, or two or more recordings of a plurality of recording media constituting one media set may be recorded. Management information may be recorded on each medium.

  In the case of FIG. 2, the information processing system records media set ID: 101 for media set 1, records media set ID: 102 for media set 2, and sets media set ID for media set 3. : 103 is recorded, data A (DATA A-1) is recorded for media set 1, data A (DATA A-2) is recorded for media set 2, and media set 3 is recorded. Record data A (DATA A-3).

  As shown in FIG. 3, when the quality of a certain media set (for example, the media set 2 with the media set ID: 102) deteriorates, all data included in this media set is replaced with a new media set (media set ID: 202 in FIG. 3). To the new media set ID (update from 102 to 202) for the management information stored in all the media sets straddled and recorded. be able to.

  However, when each media set is composed of write-once media such as BD-R, DVD-R, etc., which can enhance reliability by preventing tampering during long-term storage and backup of data, the quality of a certain media set Even if the data of this media set is moved to a new media set, it is not easy to update the management information of other media sets recorded across the media set.

  For example, in the example of FIG. 3, when data recorded in the media set 2 with the media set ID: 102 is migrated to the media set 4 with the media set ID: 202, the media set IDs 101 and 103 that are write-once media are used. The management information written in the media sets 1 and 3 cannot be changed. That is, the management information written in the media sets 1 and 3 of the media set IDs 101 and 103 includes the media set IDs 101, 102, and 103. The media set IDs 101, 102, and 103 included in the management information are the media set IDs: It cannot be changed to 101,202,103.

  Accordingly, in response to the migration, the data recorded in the media set 1 with the media set ID: 101 is migrated to the media set with the media set ID: 201. Management information including ID: 201, 202, 203 is recorded, and further, the data recorded on the media with the media set ID: 103 is migrated to the media set with the media set ID: 203. Management information including media set IDs: 201, 202, 203 is recorded. Such migration is not efficient.

  Assuming that Data B (Data B-1) other than Data A (Data A-3) is recorded across the media set of Media Set ID: 103 as shown in FIG. When the data of the media of the medium is migrated to the media set of the media set ID: 203, the media straddling information included in the management information of Data B must also be changed. However, since each media set is composed of write-once media, the management information of each media set cannot be changed, and the data of the media set with the media set ID: 104, which is the recording destination of Data B, is also included. It becomes a migration target. Furthermore, assuming that this media set ID: 104 also has another straddling record Data C (Data C-1), eventually trying to migrate one media set, depending on the situation, for all media sets Migration may be required. Such migration is not efficient.

  The information processing system of the present embodiment can realize migration efficiently. Hereinafter, efficient migration by the information processing system of the embodiment will be described. In the present embodiment, migration is used to mean migration, migration, and the like.

  Although the management information can be recorded in the auxiliary memory added to the media set, if data straddling recording is repeated in one media set, a huge capacity auxiliary memory is required. Therefore, in this embodiment, a method that does not use an auxiliary memory will be described.

  For example, as shown in FIG. 5, the information processing system records Data A across the media set 1 with the media set ID: 101 and the media set with the media set ID: 102. That is, the PC 200 instructs the media set 1 with the media set ID: 101 to record Data A-1 and management information, and in response to this, the storage apparatus 100 uses the media with the media set ID: 101. Data A-1 and management information are recorded for set 1, and PC 200 instructs media set 2 of media set ID: 102 to record Data A-2 and management information. Correspondingly, the storage apparatus 100 records Data A-2 and management information for the media set 2 of media set ID: 102. The management information includes information on Data A and media set IDs: 101 and 102.

  In this situation, when the quality of the media set 2 with the media set ID: 102 deteriorates and migration is necessary, if the media set ID is treated as a unique one, all the related straddle records as shown in FIG. Migrating the data of the media set (media set ID: 101, 102) to the new media set (media set ID: 201, 202) and recording management information corresponding to the new media set to the new media set; Become.

  Since migration of all such media sets is inefficient, the information processing system has enabled migration of some media sets. Therefore, the information processing system records the media set ID of the migration source in the media set of the migration destination without making the media set ID unique. That is, the information processing system permits duplicate recording of media set IDs.

  By doing so, even if the quality of the media set 2 with the media set ID: 102 deteriorates in the situation of FIG. 5 as described above, the entire media set 2 with the media set ID: 102 as shown in FIG. Data is migrated to media set 3 with media set ID 102.

  That is, before migration, Data A-1 and management information including the media set IDs: 101 and 102 are recorded in the media set 1 with the media set ID: 101, and the data set is recorded in the media set 2 with the media set ID: 102. A-2 and management information including media set IDs: 101 and 102 are recorded. After the migration, Data A-1 and management information including the media set IDs 101 and 102 are recorded in the media set 1 with the media set ID: 101, and the data A is recorded in the media set 3 with the media set ID: 102. -2 and management information including media set IDs: 101 and 102 are recorded.

  Therefore, since the management information does not need to be updated, it is only necessary to migrate the media set whose quality has deteriorated, and the efficiency of migration can be improved.

  However, in this situation, there are a plurality of media sets having the same media set ID. In the case of FIG. 7, the media set ID: 102 of the media set 2 and the media set ID: 102 of the media set 3 are the same.

  If the media set having duplicate IDs has the same data immediately after migration as shown in FIG. 7, the problem is relatively small. However, if Data B is additionally recorded after migration as shown in FIG. Data B can be reproduced from the media set 3, but Data B cannot be reproduced from the migration source media set 1.

  Therefore, when recording data on each media set, the information processing system does not record the limit capacity of each media set, but records data while leaving a migration management area having a certain capacity. The PC 200 of the information processing system instructs the migration management area of the migration-source media set to be migrated to record migration information (flag) indicating migration completion, and in response to this, the storage The apparatus 100 records migration information in the migration management area of the migration source media set. In the cases of FIGS. 1 and 7, the information processing system is the migration source (the flag) indicating that the media set 2 has been migrated because the media set 2 is the migration source to be migrated. Record.

  When the information processing system processes the media set, if the migration information is detected from the media set, the latest data may not be recorded in the media set, and the data recorded in the media set may be You can recognize that it has been migrated to a new media set.

  As previously defined, the media set is composed of a plurality of recording media. For example, when the data of the media set 2 is migrated due to the deterioration of the quality of the media set 2, it may be possible that some media constituting the media set 2 are not recordable. When a flag is recorded for two or more media (for example, all media) constituting the set 2, and the flag is detected from one or more media among the plurality of media constituting the media set 2, the media set 2 is determined as the migration source.

  There is a case in which a plurality of recording media constituting a media set are stored in a magazine or the like, and RFID is given to the magazine. The RFID assigned to the magazine is an ID independent of the media set ID. The information processing system may record at least a part of the RFID information given to the magazine of the migration destination media set together with the migration information described above. Thus, when the information processing system detects the migration information and at least a part of the RFID information from the media set, the information processing system can identify the migration destination media set from the at least part of the information of the RFID.

  Further, information (version number / generation number) indicating the number of migrations may be given to the media set ID. For example, 102 (1) shown in FIG. 1 shows media set ID = 102, version number = 1 version, and 102 (2) shown in FIG. 1 shows media set ID = 102, version number = 2 version.

  As shown in FIG. 1, the PC 200 instructs the media set 1 to record a media set ID with generation information indicating the first generation, and in response to this, the storage apparatus 100 1 is recorded with a media set ID (101 (1)) with generation information indicating the first generation. Similarly, the PC 200 instructs the media set 2 to record a media set ID with generation information indicating the first generation, and in response to this, the storage apparatus 100 instructs the media set 2 to The media set ID (102 (1)) with generation information indicating the first generation is recorded.

  Also, the PC 200 instructs the media set 1 to record Data A-1 and management information, and in response to this, the storage apparatus 100 sends the Data A-1 to the media set 1. And management information. Similarly, the PC 200 instructs the media set 2 to record Data A-2, and in response to this, the storage apparatus 100 instructs the media set 2 to manage Data A-2 and management information. And record. As shown in FIG. 8, the management information includes Data name: DATA A, number of divisions: 2, and all media set IDs: 101 (1) and 102 (1).

  When the PC 200 detects the quality deterioration of the media set 2, the migration is executed. For example, the PC 200 instructs the migration destination media set 3 to record a media set ID with generation information indicating a second generation newer than the first generation, and in response to this, the storage apparatus 100 Then, a media set ID (102 (2)) with generation information indicating the second generation is recorded for the media set 3. Further, the PC 200 instructs to migrate the data of the media set 2 to the media set 3, and in response to this, the storage apparatus 100 sends the data of the media set 2 (Data A-2) to the media set 3. And management information).

  Further, when the PC 200 additionally records Data B for the media set 3 and the new media set 4, the PC 200 assigns a media set ID with generation information indicating the first generation to the new media set 4. In response to this, the storage apparatus 100 records a media set ID (103 (1)) with generation information indicating the first generation in the media set 4. Further, the PC 200 instructs the media set 3 to record Data B-1 and management information, and in response to this, the storage apparatus 100 instructs the media set 3 to Data B-1. And management information. Similarly, the PC 200 instructs the media set 4 to record Data B-2, and in response to this, the storage apparatus 100 sends the Data B-2 and management information to the media set 4. And record. As shown in FIG. 8, the management information includes Data name: DATA B, number of divisions: 2, and all media set IDs: 102 (2) and 103 (1).

  As described above, by adding the version number / generation number to the media set ID, migration history management becomes easy.

  For example, when the information processing system detects that a flag is recorded in the media set 2, data recording on the media set 2 is prohibited, but reproduction of data recorded on the media set 2 is permitted. That is, the information processing system prohibits the recording of new data (re-migration) on the migration source media set, but permits the reproduction of the data recorded on the migration source media set.

By preventing new data from being recorded at the migration source, it is possible to ensure that the migration destination includes all the data recorded at the migration source. Also, check the flag when performing migration, and if the media set to be migrated has already been migrated, it is determined that it is not the latest version and migration is prohibited, so that the migration destination media set In addition, the information processing system can identify a media set necessary for data reproduction from the version number information. For example, when the information processing system reproduces Data B, the management information corresponding to Data B includes 102 (2) and 103 (1) as shown in FIG. For the set, Data B is played from the media set newer than (2) or (2), and for the media set with the media set ID: 103, Data B is played from the media set newer than (1) or (1) . When the information processing system reproduces Data A, as shown in FIG. 8, the management information corresponding to Data A includes 101 (1) and 102 (1). For the set, play Data A from the media set newer than (1) or (1), and for the media set with the media set ID: 102, play Data A from the media set newer than (1) or (1) .

  The present embodiment will be summarized below.

  Since the information processing system records the media set ID of the migration source media set for the migration destination media set, the management information including the media set ID need not be updated. In other words, it is possible to migrate only media sets with poor quality.

  Further, since the information processing system records migration information (flag) indicating that migration has been completed for the migration source media set, further information is recorded for the migration source media set, and the migration source media set. It is possible to prevent a migration destination from being additionally created from the set.

  In addition, the information processing system gives information (version number / generation number) indicating the number of migrations to the media set ID, so that the migration history can be easily managed. Further, when there is a media set having the same media set ID, it is possible to easily determine which version number and later can be reproduced using the recorded media set.

  Note that the information recording, reproduction, migration, and other processes described in the present embodiment can all be executed by software. Therefore, by simply installing and executing a program for executing these processes in the information processing system, These processes can be realized.

  For example, the information processing system can download the program from the server, store the downloaded program, and complete the installation of the program. Alternatively, the information processing system can read the program from a computer-readable storage medium, store the read program, and complete the installation of the program.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 100 ... Storage apparatus, 200 ... PC, 10 ... Input part, 20 ... Sub control module, 30 ... Main control module, 40 ... Display part, 50 ... Memory, 70 ... HDD (hard disk drive) part, 80 ... Power supply part

Claims (9)

For a first media set composed of a plurality of media, first identification information, and the first data block of the first and second data blocks constituting the first recording target data, , First management information for managing recording destinations of the first and second data blocks, and second identification information for a second media set composed of a plurality of media, Recording means for recording the second data block and the first management information;
A third media set composed of a plurality of media is set as a migration destination, and the first identification information recorded in the second media set that is the migration source with respect to the third media set, the first A migration processing means for recording the data block and the first management information, and recording migration information indicating that migration has been performed on the second media set;
An information processing apparatus comprising:   The information processing apparatus according to claim 1, further comprising a control unit that does not permit recording of information on the second media set based on detection of the migration information from the second media set.   The information processing apparatus according to claim 2, wherein the control unit permits reproduction of information recorded in the second media set based on detection of the migration information from the second media set.   The recording means records the first identification information with first generation information on the first media set, and records the first identification information with the first generation information on the second media set. The second identification information is recorded, and the second identification information with second generation information that is newer than the first generation is recorded for the third media set. Or one information processing device. The recording means, for the third media set, the third data block of the third and fourth data blocks constituting the second recording target data, and the third and fourth data blocks. Second management information for managing the recording destination of the data block, and for a fourth media set composed of a plurality of media, third identification information, the fourth data block, Recording the second management information;
The first management information includes the first identification information with the first generation information indicating the recording destination of the first data block, and the first information indicating the recording destination of the second data block. The second identification information with generation information,
The second management information includes the second identification information with the second generation information indicating the recording destination of the third data block, and the first information indicating the recording destination of the fourth data block. The information processing apparatus according to claim 4, comprising the third identification information with generation information.   Based on the first management information, the first data block is reproduced from the media set in which the first generation information or the first identification information with generation information newer than the first generation information is recorded. Based on the first management information, the second data block is reproduced from the media set on which the first generation information or the second identification information with generation information newer than the first generation information is recorded. The information processing apparatus according to claim 5, further comprising reproducing means for performing.   Based on the second management information, the reproducing means is configured to generate the third generation information from the second set information or the media set in which the second identification information with generation information newer than the second generation information is recorded. A fourth data block is reproduced from the media set on which the first generation information or the third identification information with generation information newer than the first generation information is recorded based on the second management information. The information processing apparatus according to claim 6, wherein the data block is reproduced.   The information processing apparatus according to claim 1, wherein the recording unit records information on the first, second, and third media sets including the plurality of write-once media. . For a first media set composed of a plurality of media, first identification information, and the first data block of the first and second data blocks constituting the first recording target data, , First management information for managing recording destinations of the first and second data blocks, and second identification information for a second media set composed of a plurality of media, Recording the second data block and the first management information;
A third media set composed of a plurality of media is set as a migration destination, and the first identification information recorded in the second media set that is the migration source with respect to the third media set, the first An information processing method for recording the data block and the first management information, and recording migration information indicating that migration has been performed on the second media set.

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