JPH1185409A - Storage system and medium managing method applied to the system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a storage system capable of doubling plural media for every medium unit of an auto-changer device. SOLUTION: Media names put to respective media 7-1 to 7-N are allowed to correspond to the names of auto-changers 5-1 to 5-N storing these medium 7-1 to 7-N, the media names are allowed to correspond to information indicating the existence of doubling of these media 7-1 to 7-N corresponding to the media names and these data are stored in a management table storage device 3 as a management table. When a data processing instruction is applied from application 8 in a computer 1 based on a medium name, a management process controller 2 retrieves the storage part 3 based on the medium name and determines an auto-changer to be accessed among 5-1 to 5-N based on the retrieved result.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a storage system for duplicating data by using an autochanger device, a media management method applied to the system, and a recording medium on which a program for the method is recorded.

[0002]

2. Description of the Related Art Conventionally, for the purpose of ensuring the reliability of data in a computer system, for example, as shown in Japanese Patent Application Laid-Open No. 6-124169, an autochanger device storing a plurality of media such as an optical disk has been proposed. A storage system that duplicates data by using the storage system is used.

Heretofore, in this type of storage system, two autochanger devices have been combined into one set, and the autochanger device itself has been duplicated. That is, duplicate primary and secondary are assigned to the two autochanger devices, and usually, all the media stored in the two autochanger devices are duplicated by associating the media stored in the same numbered slot of each autochanger device. Was.

By the way, considering the reliability of data in a computer system, not only is it necessary to duplicate the autochanger device itself as described above, but also, for example, it is only necessary to duplicate a specific medium. There is also a case where a medium having low performance and not requiring duplication is used.

However, as described above, in the related art, the autochanger devices must always be duplicated.
Because the primary and secondary of the duplication were fixedly determined for each autochanger device, for example, duplicate media in one autochanger device, duplicate only specific media in the autochanger device, and do not duplicate the remaining media. However, the operation according to the importance of the media could not be performed.

In particular, when using a medium that requires duplication and a medium that does not require duplication in the same computer system, it is necessary to provide another autochanger device in addition to the two autochanger devices for duplication. there were.

[0007]

As described above, in the conventional storage system, since it is necessary to duplicate the autochanger devices, there is a problem that a flexible system cannot be constructed according to the importance of the media. Was.

The present invention has been made in order to solve such a problem, and an object of the present invention is to provide a storage system, a medium management method, and a recording medium capable of performing duplication in units of media of an autochanger device. I do.

[0009]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention relates to a storage system in which a plurality of autochanger devices storing a plurality of media are connected. A storage means for storing the stored autochanger device name and information indicating the presence / absence of duplexing of the medium corresponding to the medium name; and a storage means based on a data processing command given by the medium name. Control means for performing control for determining an autochanger device to be accessed based on the result.

According to the present invention, the name of the medium assigned to the medium is associated with the name of the autochanger device in which the medium is stored, and further, the name of the medium is associated with information indicating the presence or absence of duplexing of the medium corresponding to the medium name. Since the media is stored in the storage system, duplication management can be performed in units of media regardless of which storage system stores the media.

Here, a distance information storage means for storing distance information indicating a distance between a storage location of the medium in the autochanger device and a drive device provided in the autochanger device is further provided, and the name of the medium to which the data processing command is applied is provided. When the medium corresponding to the above is duplicated, if it is determined by searching the distance information storage means that it is necessary to access the autochanger device storing the medium in a storage location closer to the drive device,
Since the moving time of the medium in the autochanger device can be short, the access efficiency of the medium is improved.

[0012] Further, use state information storage means for storing use state information indicating the use state of the drive device provided in the autochanger apparatus is further provided, and the control means controls the medium corresponding to the name of the medium for which the data processing instruction was made. When the drive is duplexed, it is determined that the drive should access an autochanger device that is not in use by searching the use status storage means, so that the drive device has priority over an autochanger device that is in an empty state. Since access is made, access efficiency is improved.

Further, a storage device capable of storing media is provided, and the media name of the media stored in the storage device is associated with the storage device name and information indicating whether or not the media stored in the storage device is duplicated. If the media corresponding to the media name targeted for the data processing instruction is set in the storage device, the control means determines that the storage device should be accessed. When accessing the stored medium, the medium does not need to be moved as in an autochanger device, and the access efficiency is improved.

[0014]

FIG. 1 is a block diagram showing the configuration of a storage system according to an embodiment of the present invention.
This storage system includes a computer 1, a management process controller 2, a management table storage unit 3, a plurality of autochanger controllers 4-1 to 4-N, and a plurality of autochanger devices 5-1 to 5-N.

The computer 1 controls the entire processing of the storage system.
By executing a predetermined application 8 under the processing of U, processing such as data writing / data reading is performed on the media 7-1 to 7-N stored in the autochanger devices 5-1 to 5-N. . However, as will be described later, on the application 8 executed by the computer 1, I / O requests are made using the media names described in the media 7-1 to 7-N as keys, and the media 7-1 to 7-N Whether the media 7-1 to 7-N is an autochanger device 5-1 to 5-5,
There is no consciousness as to whether it is stored in -N.

The autochanger devices 5-1 to 5-N are provided with a plurality of slots (not shown), and the required number of media 7-1 to 7-N are stored in these slots. You. The auto-changer devices 5-1 to 5-N include an auto-changer controller 4
Under the control of -1 to 4-N, media 7-1 to 7-N designated by an autochanger mechanism (not shown) are inserted into drives 6-1 to 6-N, and these drives 6
The media 7-1 to 7-N are accessed using -1 to 6-N.

FIG. 1 shows each autochanger device 5.
Although two drives 6-1 to 6-N are provided in -1 to 5-N, the number of drives 6-1 to 6-N to be provided in the autochanger device 5-1 to 5-N is arbitrary. . Further, as the media 7-1 to 7-N, any recording media such as a floppy disk, a magneto-optical disk, an optical disk, and a DVD can be used.
Can be changed according to the type of the media 7-1 to 7-N. Further, the number of slots may be different among the autochanger devices 5-1 to 5-N.

The management process controller 2 centrally manages information relating to the autochanger devices 5-1 to 5-N and the media 7-1 to 7-N in the system as a management table in the management table storage unit 3. The management table storage unit 3 based on an I / O request by a media name from the application 8 of the computer 1.
And the media 7 indicated by the media name
Autochanger device 5 storing -1 to 7-N
-1 to 5-N are specified, and I / O requests are issued to the corresponding autochanger controllers 4-1 to 4-N. Note that the processing of the management process controller 2 may be described as a program, and the program may be executed by the computer 1.

In this case, information for specifying the autochanger devices 5-1 to 5-N in which the corresponding media 7-1 to 7-N are stored from the media name is stored in the management table storage unit 3 as a management table. Have been. This management table includes a device management table for managing information on the autochanger devices 5-1 to 5-N, and a medium 7-.
A media management table for managing the information of 1-7-N, and a usage status management table for managing the usage status of the autochanger devices 5-1-5-N and the media 7-1-7-N. Divided into two.

FIG. 3 is a diagram showing an example of such a management table. FIG. 3A shows an apparatus management table, FIG. 3B shows a media management table, and FIG. 3C shows a use status management table.

As shown in FIG. 2A, the device management table contains "autochanger device names" indicating the names of the autochanger devices 5-1 to 5-N, and is incorporated in the autochanger devices 5-1 to 5-N. Drives 6-1 to 6-N
And the "failure status" of the drives 6-1 to 6-N are registered.

As shown in FIG. 2B, the media management table contains media 7-1 existing in the system.
7-N, the "autochanger device name" indicating the storage location of the media 7-1 to 7-N, and the media 7-1 to 7-N are duplicated. "Primary / secondary management" indicating whether the media are managed as primary or secondary or independent, and the media 7-1 to 7-N
Is registered.

In this case, if the same “media name” as in media 1 and 2 exists, the corresponding media 7-1
7-N are duplicated, and if the same “media name” does not exist as in media 3 and 4, the corresponding media is recognized as being a single media without duplication.
The item of “autochanger device name” includes an autochanger device 5 storing the media 7-1 to 7-N.
In addition to the names -1 to 5-N, the media 7-1 in the autochanger devices 5-1 to 5-N are shown in parentheses ().
Slot numbers indicating storage locations of .about.7-N are registered.
Note that the smaller the slot number is, the more the drives 6-1 to 6-
It is assumed that the media 7-1 to 7-N are stored at positions near N.

Further, as shown in (c), the usage status management table includes "autochanger device name",
“Internal drive device name” and its drives 6-1 to 6-
The “media name” currently inserted in N and the “usage status” of the drives 6-1 to 6-N are registered.

The device management table is mainly defined by the user using a predetermined tool when the system is first constructed or when an autochanger device is newly added to the system. However, as described later, the autochanger devices 5-1 to 5-
When N or any of the drives 6-1 to 6-N fails, the management process controller 2 automatically updates the data.

The use state management table is automatically defined by the management process controller 2 based on signals from the auto changer controllers 4-1 to 4-N controlling the auto changer devices 5-1 to 5-N. It changes relatively dynamically as compared with the device management table and the media management table.

The media management table is defined by the user using a predetermined tool, and the user stores / returns the media 7-1 to 7-N to the autochanger devices 5-1 to 5-N. There is a method to update automatically when you do. Hereinafter, the latter method of automatically updating the media management table will be described.

FIG. 3 is a flowchart showing a process of updating the media management table when the media is stored. When the user stores a medium in an empty slot of each of the autochanger devices 5-1 to 5-N, first, a medium name is set (step S21). At this time, if the medium name is described in the stored medium, the medium name is set as the “media name”, otherwise, the user is prompted to input the medium name.

Next, if the set media name is a new media name (Yes in step S22), that is, if the set media name is not registered in the media management table, the management process controller 2
Creates new information on the media name in the media management table. At this time, “primary and secondary management” is set as a single item (step S23).

On the other hand, if the media name set in step S21 is not a new media name (step S21).
22; that is, if the information of the same media name exists in the media management table, the management process controller 2 determines that the corresponding two media 7-1 to 7-N are to be duplicated, and the corresponding media management is performed. Change the information in the table from single to duplex (step S2
4). Specifically, the “primary / secondary management” of the information on the media 7-1 to 7-N stored up to that point is changed from “single” to “primary” and the newly stored medium 7- Information 1 to 7-N is added to the media management table with “primary / secondary management” as “secondary”.

FIG. 4 is a flowchart showing a process of updating the media management table when returning the media. When the user takes out the media 7-1 to 7-N from the slots of the autochanger devices 5-1 to 5-N, the information about the media 7-1 to 7-N returned from the autochanger controllers 4-1 to 4-N is displayed. Sent to the management process controller 2
Determines whether all the media 7-1 to 7-N having the same name have been returned with reference to the management table storage unit 3 based on the information (step S31).

If Yes in step S31, that is, the returned media 7-1 to 7-N are single media, and if no media 7-1 to 7-N having the same media name remains in the system, the management process controller 2 deletes the information on the media 7-1 to 7-N from the media management table (step S32).

If No in step 31, that is, the returned media 7-1 to 7-N have been duplicated, and if the media 7-1 to 7-N having the same media name remain in the system, The process controller 2 changes the corresponding information in the media management table from duplex to single (step S33). That is, the information on the returned media 7-1 to 7-N is deleted from the media management table, and the “primary and secondary management” of the information on the remaining media 7-1 to 7-N is changed to “single”.

Next, using the management table thus set, the autochanger devices 5-1 to 5-N
The process of accessing the media 7-1 to 7-N will be described with reference to the flowchart shown in FIG.

In this case, the application 8 of the computer 1 issues an I / O request by the media name to the management process controller 2 (step S1). The management process controller 2 refers to the media management table in the management table storage unit 3 based on the media name, and determines the autochanger devices 5-1 to 5-N storing the corresponding media 7-1 to 7-N. At the same time as specifying (step S2), it is determined whether or not the media 7-1 to 7-N are duplicated, that is, whether the media are managed as primary and secondary (step S3). In the following, it is assumed that the media 7-1 to 7-N that have been subjected to the I / O request have been managed as primary and secondary media.

The management process controller 2 further checks the specified autochanger devices 5-1 to 5-N and the failure status of the media 7-1 to 7-N by referring to the device management table and the media management table. (Step S4).

If the I / O request from the application 8 is a write request (Yes in step S5), the management process controller 2 sends the medium 7-1 to both the primary and secondary media.
Auto-changer device 5 in which primary and secondary media 7-1 to 7-N are stored in order to write data to
A write request is issued to the auto-changer controllers 4-1 to 4-N that control -1 to 5-N (step S6), and the auto-changer controller 4-1 is issued.
To a waiting state of the processing result from 4-N (step S
7). Here, if the primary and secondary media 7-1 to 7-N are stored in one autochanger device 5-1 to 5-N, an autochanger controller 4-1 for controlling the autochanger devices 5-1 to 5-N. Two write requests are issued to .about.4-N.

The autochanger controllers 4-1 to 4-1 to which a write request has been sent from the management process controller 2
The 4-N controls the autochanger devices 5-1 to 5-N to insert the corresponding media 7-1 to 7-N into the drives 6-1 to 6-N and perform data writing processing. Data to be written is sent from the computer 1 via the management process controller 2 and the autochanger controllers 4-1 to 4-N.

When this writing process is performed normally,
The autochanger controllers 4-1 to 4-N return processing results indicating that to the management process controller 2. On the other hand, when a failure occurs in the writing process, the autochanger controllers 4-1 to 4-N determine whether the failure in the autochanger devices 5-1 to 5-N or the drives 6-1 to 6-N.
-N or a failure of the media 7-1 to 7-N, and the result of the determination is returned to the management process controller 2 together with the processing result of the write error. In addition, two drives 6-1 are provided in the autochanger devices 5-1 to 5-N.
6-N, the drives 6-1 to 6-N
Even if a failure has occurred in one of the N, the autochanger devices 5-1 to 5-N are determined to have no failure.

The management process controller 2 checks the processing results returned from the auto changer controllers 4-1 to 4-N, and if the writing processing has been normally performed on the primary and secondary media 7-1 to 7-N (step Ye in S8
s), the processing result indicating this is returned to the application 8 of the computer 1, and the processing is terminated (step S1).
6).

When a processing result indicating a write error is sent from the autochanger controllers 4-1 to 4-N (No in step S8), the management process controller 2 determines whether a fault has been sent together with the processing result. The contents of the management table are rewritten based on the judgment result (step S9). Further, primary and secondary media 7-1 to 7-N
If any one of them is abnormal (one-sided abnormality), the processing result is normal, and if any of the primary and secondary media 7-1 to 7-N is abnormal (primary and secondary abnormality), the processing result is abnormal (step S
10), the processing result is returned to the application 8 of the computer 1, and the processing ends (step S16).
In the latter case, it is desirable to notify the user of the occurrence of a one-way abnormality.

By the way, here, the primary and secondary media 7-1
7-N are completed, the result is returned to the application 8, but one of the media 7-1 to 7-N
When the writing process is completed, the processing result may be returned to the application 8, and the writing to the other may be continued only inside the autochanger devices 5-1 to 5-N. Efficiency can be improved.

On the other hand, if the I / O request by the application 8 is a read request (N in step S5)
o), the management process controller 2 refers to the management table in the management table storage unit 3 and
Autochanger device 5-1 in which 1-7-N are stored
Autochanger controller 4-1 for controlling 5-N
Issue a read request to the CPU (step S1).
1) As in the case of the write process, the process results in a wait state for the process result (step S12).

Here, when the primary and secondary media 7-1 to 7-N are stored in the two autochanger devices 5-1 to 5-N, basically, the positive media 7-1 to 7-N , A read request may be issued. However, depending on the I / O request given from the application 8 before that, the positive media 7-1 to 7-N are busy.
Therefore, the processing may be waited for completion. for that reason,
The management process controller 2 refers to the use status management table in the management table storage unit 3 and issues a read request to one of the primary and secondary media 7-1 to 7-N that can be accessed faster, thereby improving access efficiency. Can be improved.

Specifically, when the positive media 7-1 to 7-N are in use as in the above-described example, the secondary media 7
A read request is issued to -1 to 7-N. Further, as shown in FIG. 6, the drives DV1 and DV1 of the autochanger device AC1 in which the positive medium C is stored.
Even when the other media A and B are inserted into the DV2 and the drives DV1 and DV2 of the autochanger device AC2 storing the sub-media C 'are vacant,
A read request is issued to the secondary medium C '.
Further, as shown in FIG. 7, the primary and secondary media C and C '
Is stored in one autochanger device AC1, a read request is issued to the positive medium C which is stored in a slot closer to the drives DV1 and DV2 and has a short insertion time by the autochanger mechanism. At this time, the media 7-1 to 7- registered in the "autochanger device name" of the media management table.
The information of the N slot position is referred to.

The autochanger controllers 4-1 to 4-1 to which a read request has been sent from the management process controller 2
The 4-N controls the autochanger devices 5-1 to 5-N to perform reading processing from the corresponding media 7-1 to 7-N.

When the reading process has been performed normally (No in step S13), a processing result indicating that fact is returned from the autochanger controllers 4-1 to 4-N to the management process controller 2, and further read. The data is sent to the application 8 of the computer 1 via the management process controller 2, and the process ends (step S16).

If an abnormality has occurred in the reading process (Yes in step S13), the cause of the failure is determined by the autochanger controllers 4-1 to 4-N as in the case of the writing process, and the determination result is transmitted to the management process controller 2 The contents of the management table in the management table storage unit are rewritten by the management process controller 2 (step S14).

Further, the management process controller 2 issues a write request to media 7-1 to 7-N whose primary and secondary sides are opposite to those of the media 7-1 to 7-N to which the read request has been issued earlier. The processing of steps S11 to S14 is repeated until the medium 7-1 to 7-N becomes abnormal in writing (step S15). As a result, when a write error has occurred in the primary and secondary media 7-1 to 7-N (No in step S15), a processing result indicating that fact is returned from the management process controller 2 to the application 8, and the processing ends. (Step S16).

As described above, in the storage system of the present embodiment, the autochanger device 5-1 in the system
-N and the information on the media 7-1 to 7-N, in particular, the name of the media, specifies the autochanger device in which the corresponding media 7-1 to 7-N is stored, and furthermore, the media 7-1 such as the primary or secondary or single media. By storing a management table for specifying the management statuses of 7 to N in the management table storage unit 3, it becomes possible to manage the duplication in units of media.

When actually performing I / O processing on the media 7-1 to 7-N, the application 8 of the computer 1 issues an I / O request by the media name, and the management process controller 2 assigns the I / O request to the media name. Based on the management table storage unit based on the
7-N is stored in the autochanger device 5-1 to 5-1.
5-N is specified, and an I / O request is issued to the autochanger controllers 4-1 to 4-N to be accessed.

At this time, if the media to be subjected to the I / O request is a single media 7-1 to 7-N, one I / O request is issued.
If a request is issued and the media 7-1 to 7-N are duplicated, whether the primary and secondary media 7-1 to 7-N are stored in different autochanger devices 5-1 to 5-N,
Two I / O requests are issued regardless of whether they are stored in one autochanger device.

In this way, not only the duplexing of the media 7-1 to 7-N, which has been performed up to the conventional duplexing of the autochangers 5-1 to 5-N, but also a single autochanging device 5- Media 7 only with 1-5-N
-1 to 7-N, or an autochanger device 5
Some media 7-1 to 7-N in -1 to 5-N can be duplicated, and other media 7-1 to 7-N can be used alone. In addition, since these configurations can be mixed in one storage system, a storage system can be flexibly constructed according to the importance of the media 7-1 to 7-N.

For example, as in the storage system shown in FIG. 8, the medium A is duplicated between the autochanger devices AC1 and AC2, and the autochanger device AC
1 and AC2, the remaining media are single media B and C, respectively.
Can be used.

As another example, as in the storage system shown in FIG.
1 and AC2, the medium B can be duplicated between the autochanger devices AC1 and AC3, and the medium C can be duplicated between the autochanger devices AC2 and AC3. In this case, in order to duplicate media A to C in the same manner as in the prior art, FIG.
As shown in (b), four autochanger devices A
In contrast to the necessity of D to D, only three autochanger devices A to C need to be used, and the autochanger devices AC1 to AC3 are effectively used.

Further, since the duplication can be managed in units of media, the autochanger devices 5-1 to 5-
Unless the N itself has to be duplicated, there is no need to make the number of slots of the autochanger devices 5-1 to 5-N uniform.

Therefore, as shown in FIG. 10, an autochanger apparatus AC having a different number of slots for storing media is used.
1 (slot number α + β) and autochanger device AC2
(The number of slots α) and the autochanger device A
Duplicate α media between C1 and AC2,
Furthermore, the β media remaining in the autochanger device AC1 can be used alone or can be duplicated only in the autochanger device AC1.

Further, as shown in FIG. 11, it is possible to use not only the autochanger devices AC1 and AC2 but also an external device having a drive corresponding to the media A, B,. At this time, as in the case of the autochanger devices AC1 and AC2, the media name of the media (the media A 'in the figure) inserted into the external device is associated with the external device name, and is further associated with whether or not the media is duplexed. Need to be stored in the management table storage unit 3. As shown in FIG.
If the medium A 'is taken out of the autochanger device AC2 and inserted into an external device in a state where the media A, B,... Are duplicated between the external device and AC2, the medium A' is always mounted in the external device. In this state, the medium does not move unlike the autochanger device AC1. Therefore, when an I / O request to the medium A occurs, the access efficiency to the medium A is improved by preferentially accessing the medium A 'of the external device.

Therefore, for example, media A,
If the access frequency of B,... Changes, the media A, B,..., Which have the highest access frequency at that time, are simply inserted into the external device, and no special environment setting is performed. Access efficiency can be improved. Further, regardless of the type of the media A, B,..., A hard disk device or the like with a higher access speed can be connected, and the contents of the desired media A, B,. Also at this time, it is necessary to store the copy source media name in the management table storage unit 3 in association with the hard disk device name and the presence / absence of redundancy.

In this storage system, whether the media 7-1 to 7-N are duplicated or independent is managed depending on whether or not information of the same media name exists in the management table. The media name is the media 7-1 to 7 to the autochanger devices 5-1 to 5-N.
-N is automatically read out when stored / returned, and the management table is automatically updated accordingly. Therefore, the duplex configuration can be easily performed only by storing / returning the media 7-1 to 7-N. Can be changed.

The usage status of the autochanger devices 5-1 to 5-N and the media 7-1 to 7-N is stored as a usage status management table, and I / O processing for the media 7-1 to 7-N is performed. When performing this operation, the medium 7-1 to 7-N that can be accessed quickly by referring to the use state management table is used.
Since the I / O request is issued preferentially to the drive 6, the drive 6
Autochanger device 5-1 in which -1 to 6-N are vacant
The efficiency of access to the media 7-1 to 7-N can be improved, for example, by first accessing the media 7-1 to 7-N of .about.5-N.

Further, the automatic changer devices 5-1 to 5
Since the information indicating the storage positions (slot numbers) of the media 7-1 to 7-N in -N is recorded in the media management table, one autochanger device 5-1 to 5-N
For example, when the media 7-1 to 7-N are duplicated in N, the media 7-1 to 7-N stored closer to the drives 6-1 to 6-N are accessed with priority, Access efficiency can be further improved.

[0063]

As described above, according to the present invention, the name of a medium attached to a medium is associated with the name of an autochanger device in which the medium is stored, and further, the name of the medium and the duplication of the medium corresponding to the medium name are duplicated. Is stored in association with information indicating the presence / absence of data, so that duplication management can be performed in units of media, and a system can be flexibly constructed.

By storing information indicating the distance between the storage location of the medium in the autochanger device and the drive device provided in the autochanger device, the user can access the autochanger device storing the media in a storage location closer to the drive device. Therefore, access efficiency is improved because the moving time of the media can be shortened.

By storing the use state of the drive device provided in the autochanger device, the drive device can access the autochanger device in an empty state with priority, thereby improving the access efficiency. Since a storage device capable of high-speed access can be used separately from the plurality of autochanger devices, access efficiency can be further improved.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a storage system according to a first embodiment of the present invention.

FIG. 2 is an exemplary view for explaining a management table according to the embodiment;

FIG. 3 is a flowchart for explaining a change of a media management table by a media storage process in the embodiment;

FIG. 4 is a flowchart for explaining a change of a media management table by a media return process according to the embodiment;

FIG. 5 is an exemplary flowchart for explaining media I / O processing according to the embodiment;

FIG. 6 is an exemplary view showing an example of a storage state of media in the embodiment.

FIG. 7 is an exemplary view showing an example of a storage state of media in the embodiment.

FIG. 8 is an exemplary view showing an example of a storage state of media in the embodiment.

FIG. 9 is an exemplary view showing an example of a storage state of media in the embodiment.

FIG. 10 is an exemplary view showing an example of a storage state of media in the embodiment.

FIG. 11 is an exemplary diagram illustrating an example of a storage state of media when an external device is used in the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Computer 2 ... Management process controller 3 ... Management table storage part 4-1 to 4-N ... Auto changer controller 5-1 to 5-N ... Auto changer device 6-1 to 6-N ... Drive 7-1 to 7-N …media

Claims (12)

[Claims] 1. A storage system in which a plurality of autochanger devices each storing a plurality of media are connected, wherein a media name assigned to the media is replaced with an autochanger device name storing the media and the media name. Storage means for storing the information in association with information indicating the presence / absence of duplication of the corresponding medium; and an autochanger for searching the storage means based on a data processing instruction given by the medium name and accessing based on the search result. A storage system comprising: control means for performing control for determining an apparatus. 2. The information processing apparatus according to claim 1, further comprising a distance information storage unit configured to store distance information between a storage location of the medium in the autochanger device and a drive device provided in the autochanger device. When the media corresponding to the media name that has become redundant,
2. The storage system according to claim 1, wherein by searching the distance information storage means, it is determined that an autochanger device storing the medium in a storage location close to the drive device should be accessed. 3. The apparatus according to claim 1, further comprising a use state storage means for storing a use state of a drive device provided in said autochanger device, wherein said control means controls a medium corresponding to a medium name targeted for said data processing instruction. Was duplicated,
2. The storage system according to claim 1, wherein the use state storage unit is searched to determine that the drive should access an autochanger device that is not in use state. 4. A storage device capable of storing the medium is provided, wherein the storage means stores a medium name of the medium stored in the storage device in the storage device name and information indicating whether the medium is duplexed. The control unit may determine that the storage device should be accessed when a medium corresponding to a media name targeted for the data processing instruction is stored in the storage device. The storage system according to claim 1, wherein the storage system is a storage system. 5. A media management method for a storage system in which a plurality of autochanger devices storing a plurality of media are connected, wherein a media name assigned to the media is replaced with an autochanger device name storing the media. Create a table associated with information indicating the presence or absence of duplication of media corresponding to the media name, search the table based on a data processing instruction given by the media name, and access based on the search result A media management method characterized by determining an autochanger device. 6. A medium corresponding to a name of a medium targeted for the data processing instruction, wherein distance information indicating a distance between a storage location of the medium in the autochanger apparatus and a drive device provided in the autochanger apparatus is created. 6. The medium management method according to claim 5, wherein when the file is duplicated, it is determined based on the distance information that an autochanger device storing the medium in a storage location closer to the drive device should be accessed. 7. A method according to claim 1, wherein the use state information indicating the use state of the drive device provided in the autochanger device is created, and when the medium corresponding to the medium name subjected to the data processing instruction is duplicated, the use state is determined. 6. The media management method according to claim 5, wherein it is determined based on the status information that the drive should access an autochanger device that is not in use. 8. A storage device capable of storing the media, wherein the table associates the media name of the media stored in the storage device with the storage device name and information indicating whether or not the media is duplicated. 6. The medium according to claim 5, wherein it is determined that the storage device is to be accessed when a medium corresponding to a media name targeted for the data processing instruction is stored in the storage device. Management method. 9. A storage medium storing a program for performing media management in a storage system connecting a plurality of autochanger devices storing a plurality of media, wherein a medium name assigned to the medium is: A table is created that is associated with the name of the autochanger device storing the medium and information indicating the presence or absence of duplication of the medium corresponding to the medium name, and the table is searched based on a data processing command given by the medium name And a computer-readable recording medium storing a program for operating a computer to determine an autochanger device to be accessed based on the search result. 10. A medium corresponding to a name of a medium targeted for the data processing instruction, wherein distance information indicating a distance between a storage location of the medium in the autochanger apparatus and a drive device provided in the autochanger apparatus is created. 10. A computer-readable storage medium storing a program for operating a computer to determine that access to an autochanger device storing a medium at a storage location closer to the drive device by retrieving the distance information when the device is duplexed. The recording medium according to the above. 11. Use state information indicating a use state of a drive device provided in the autochanger device is generated, and when a medium corresponding to a medium name targeted for the data processing instruction is duplicated, the use state is determined. 10. The recording medium according to claim 9, wherein a program for operating a computer is determined by retrieving status information to determine that the drive should access an inactive autochanger device. 12. A storage device capable of storing the medium, wherein the table associates a media name of the medium stored in the storage device with the storage device name and information indicating whether the medium is duplexed. 10. A program for operating a computer to determine that the storage device should be accessed when a medium corresponding to a media name targeted for the data processing instruction is stored in the storage device. The recording medium according to the above.