JPH10254635A - Storage subsystem for checking input array groups - Google Patents

Abstract

(57) Abstract: The present invention relates to a storage device for confirming whether a portable storage medium has been correctly inserted into a library when a user inserts a portable storage medium constituting an array group into a library. To provide subsystems. When a user inserts a recording medium into a slot of a library apparatus, the user reads control information on an array group recorded on the recording medium, and the user places the recording medium in the library apparatus. Check if you have put it in. If the user makes an incorrect input, a warning is notified to the user using the display device 101.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a highly available storage system for portable storage media.

[0002]

2. Description of the Related Art In an information processing system, data is stored in a disk device. A paper by Paterson (A.C.M. Sigmod Conference Proceedings, June 1988, pages 109-116).
(D. Patterson, et al: A Case for Redundant Arrays of
Inexpensive Disks (RAID), ACM SIGMOD conference pro
ceeding, Chicago, IL, June 1-3, 1988, pp. 109-116)) discloses a technology relating to a disk array, which is a mechanism for realizing high performance and high reliability of a disk system. In a disk array, a plurality of disk units are physically connected to a processing unit to improve performance.
Pretend to be two disk units. On the other hand, when a failure occurs in a disk device storing data, redundant data for performing data recovery is stored in another disk device for higher reliability.

In information processing systems, magnetic tapes, optical storage devices, and the like are frequently used as storage devices other than disk devices. Especially recently, DVD (Dig
Ital Video Dsk) is attracting attention. The feature of these storage devices is that the storage medium and the recording / reproducing device are separated from each other, and the storage medium is loaded into an arbitrary recording / reproducing device, and data on the storage medium is read / written. Generally, these media are called portable storage media. In a large-scale information processing system, a library has been introduced to facilitate management of a very large number of portable storage media. The library includes, in addition to the recording / reproducing device, a storage shelf that stores a large number of portable storage media, a robot that transports the portable storage medium between the storage shelf and the recording / reproducing device, and the like. . Further, the library is provided with an outlet for a user to take out a portable storage medium from the library and an input port for a user to insert a portable storage medium into the library.

[0004] Since the data handled by the information processing system is becoming larger and larger, there is a very high need for improving its availability. Therefore, even in the storage device system configured by the portable storage medium as described above, the Pat
It is effective to achieve high availability by applying the concept proposed in the terson paper.

[0005] As a technology applying such a concept to a portable storage medium, Comdex 96: DVD application (Alan E. Bell (IBM Research Divisio)
n): DVDApplications, COMDEX 96, Nov. 20, 1996). In this document, RAIL (Redundant Arrays of Inexpensiv) having redundancy by combining a plurality of ordinary libraries including DVDs, recording / reproducing devices, robots, and the like.
e Libralies) has been proposed.

[0006]

When the disk array technology is applied to a portable storage medium, a plurality of portable storage media can appear as one portable storage medium to a processing device. FIG. 2 is a diagram showing the outline. A plurality of portable storage media 203 (203a,
03b, 203c and 203d) appear as one virtual portable storage medium 200. That is, the data 201 recorded by the processing device on one virtual portable storage medium 200
Is recorded on a physically different portable storage medium 203. For example, the data 201a is recorded on the portable storage medium 203a, the data 201b is recorded on the portable storage medium 203b, and the data 201c is recorded on the portable storage medium 203c. Also, the parity 204, which is redundant data that enables data recovery, may be recorded on the portable storage medium 203d. At this time, the portable storage media 203a, 203
3b, 203c and 203d are called array groups.

In a storage subsystem which stores portable storage media constituting the array group in a library and transfers data to and from a processing device, when a user inserts a portable storage medium into the library, the storage subsystem is correctly configured. It is necessary to insert a portable storage medium. For example, when a user tries to put an array group composed of five portable storage media into a library,
When two portable storage media and two portable storage media belonging to an array group b different from the array group a are put into the library, data cannot be transferred to and from the processing device. Also, there are five libraries, and portable storage media belonging to the same array group are stored in different libraries, and in a storage subsystem for performing data transfer with a processing device, a user may belong to the same array group. If all portable storage media are put into the same library, the storage subsystem cannot transfer data to and from the processing device.

An object of the present invention is to provide a storage subsystem which, when a user inserts a portable storage medium into a library, checks the validity of the inserted portable storage medium.

[0009]

The following describes how to achieve the object of the present invention for the above objects.

In a storage subsystem in which the disk array technology is applied to a portable storage medium, there are the following two methods for storing a portable recording medium.

(1) One portable library stores all portable storage media belonging to one array group. That is, when one array group is configured by the portable storage medium A, the portable storage medium B, and the portable storage medium C, one portable storage medium A, one portable storage medium B, and one portable storage medium C are used. In a library.

(2) Portable recording media belonging to one array group, such as RAIL, are stored in different libraries. That is, the portable storage medium A, the portable storage medium B,
When one array group is configured by the portable storage medium C, the portable storage medium A is stored in the library a, the portable recording medium B is stored in the library b, and the portable storage medium C is stored in the library c. I do.

In the case of the above (1), an identifier for identifying each array group is recorded on a portable storage medium. When the user puts the portable storage medium into the library, the portable storage medium is loaded into the recording / reproducing device and the recorded identifier is read. When the inserted portable storage medium is the first portable storage medium of the array group, the read identifier is stored. When the second portable storage medium is the second or later, the stored identifier is read as the stored identifier. Compare whether the identifiers are the same and confirm whether the user has correctly inserted the portable storage medium. Further, the number of portable storage media constituting the array group is also recorded in the portable storage medium, and the number of the inserted portable storage media is compared with the number of recorded portable storage media, so that the array group is stored. Recognize completion of loading.

In the case of the above (2), in addition to the comparison of the identifiers and the number of the portable storage media described in the case of the above (1), the library into which the portable storage media is inserted is stored. Then, it is checked whether the user has put portable storage media belonging to the same array group into different libraries.

Further, in (1) and (2), if the user gives up the loading of the portable storage medium, a warning is given to the user or the processing that there is an error in the loading method of the portable storage medium. Notify the device. Further, the portable storage medium erroneously inserted by the user is ejected from the library.

As described above, the identifier for identifying the array group is recorded on the portable storage medium, and the identifier or the like is confirmed, thereby confirming whether the user has correctly inserted the portable storage medium into the library. You can check.

[0017]

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

First, a first embodiment will be described.

FIG. 1 shows a host 10 according to the first embodiment.
1 is a configuration diagram of an information processing system including a storage control device 102, a library control device 107, and a display device 101.

The storage control device 102 is a control processor 1
05, a control memory 106. The control processor 105 includes a closing process 103, a closing time monitoring process 104
And a function of exchanging information with the control unit 108 of the host 100, the display device 101, and the library device 107. Further, the control processor 105 has a function of acquiring the current time. The control memory 106 stores control information necessary for the control processor 105 to execute processing.

The display device 101 has a function of displaying information and the like in accordance with a display request of the control processor 105 of the storage control device 102 and showing the information to the user.

The library unit 107 includes a control unit 108,
Accessor 109, storage shelf 110, recording / reproducing device 11
2. It comprises an inlet 113 and an outlet 114. The recording medium 111 is a portable storage medium for storing data.
For example, it corresponds to a magnetic tape, a magneto-optical disk, a DVD, or the like. The recording media 111 is provided with an identifier for identifying each. The storage shelf 110 has a function of storing a plurality of recording media 111. The recording / reproducing device 112 has a function of recording / reproducing data on the mounted recording medium 111 under the control of the control unit 108. Accessor 109
According to the control of the control unit 108, (1) the recording medium 111 is transported from the insertion port 113 to the recording / reproducing device 112 and mounted. (2) The recording medium 111 is demounted from the recording / reproducing device 112 and (3) transport the recording medium 111 to the recording / reproducing apparatus 1
12 to dismount and transport the outlet 114,
(4) The recording medium 111 is discharged from the storage shelf 110 to the outlet 1
14 is transported. The slot 113 is used when the user inserts the recording medium 111 into the library device 107. When the user 113 sets the recording medium 111 in the slot 113, the controller 113 determines that the recording medium 111 has been inserted. 108 is provided. The discharge port 114 is provided when the user
11 is a portion that receives 11 from the library device 107.
The control unit 108 controls the entire library device 107. (1) The access unit 109 is controlled in accordance with the mount request of the control processor 105, and the recording medium 111 designated by the control processor 105 is inserted into the input port 11
3 to the recording / reproducing device 112 and the recording medium 1
(2) The accessor 109 is controlled in accordance with the demount request of the control processor 105, and the recording medium 11 designated by the control processor 105 is
1 from the recording / reproducing device 112, and
10; (3) the accessor 109 is controlled in accordance with the discharge request of the control processor 105 to convey the recording medium 111 designated by the control processor 105 to the discharge port 114; and (4) a reproduction request of the control processor 105. Controls the recording / reproducing device 112 in accordance with the above, reproduces the data recorded in the recording medium 111, and transfers it to the control processor 105. (5) Receives the notification that the recording medium 111 has been inserted from the insertion port 113 And a function of notifying the control processor 105 that the recording medium 111 has been inserted.

In the information processing system described in the first embodiment, all the recording media 111 constituting one array group are stored in one library device 107,
I / O with the host 100 is performed using a plurality of recording / reproducing devices 112 in one library device 112.

FIG. 3 shows a data recording format of the recording medium 111. The data recording area of the recording medium 111 is divided into a system area 300 for storing control information used by the control processor 105 and a user area 301 for storing data used by a user. System area 3
00 is the group name 302 and the number of group media 30
3. Control information such as a media number 304 and a media number 305 in the group are stored. Group name 302
Indicates an identifier for identifying the array group to which the recording medium 111 belongs. The group media number 303 indicates the number of recording media 111 forming an array group to which the recording media 111 belongs. The media number 304 in the group is the recording medium 1 corresponding to the recording medium 1 in the array group.
For example, when an array group is configured by three recording media 111,
The array group has a media number 304 within the group.
Is composed of a recording medium 111 whose media number is “1”, a recording medium 111 whose media number 304 is “2”, and a recording media 111 whose media number 304 is “3”. The media number 111 indicates an identifier for identifying the recording medium 111.

FIG. 4 shows control information stored in the control memory 106. The input processing control information 400 is stored in the control memory 106. Input processing control information 400
In the loading of the recording medium 111 constituting the array group, the loading process 103 and the loading time monitoring process 1
Reference numeral 04 denotes control information for managing the loading status of the recording medium 111, which is composed of one loading status 401, one loading start time 402, one group name 403, and a plurality of individual information 404. The loading status 401 is information indicating whether or not the recording media 111 forming the array group has been loaded. “In loading” indicates that the recording media 111 forming the array group has been loaded. “Non-input” indicates that the recording media 111 constituting the array group has not been input. The group name 403 stores an identifier for identifying an array group. When the loading start time 402 is set, the first recording medium 111 of the recording media 111 belonging to the array group identified by the group name 403 is
07 shows the input time. One piece of individual information 404
Is information on one recording medium 111, and is composed of a media number 406, a media number 407, and a loading status 408 in a group. Group media number 40
Reference numeral 6 denotes a number for identifying each recording medium 111 belonging to the same array group in the array group. The media number 407 is for each recording medium 111
Indicates the number assigned to each recording medium 111 in order to identify. The loading status 408 indicates that the recording medium 1
11 is information indicating whether or not the recording medium 111 has been loaded into the library device 107, and “loaded” indicates that the corresponding recording medium 111 has been loaded into the library device 107;
“Not inserted” indicates that the corresponding recording medium 111 has not been inserted yet.

FIG. 5 shows a processing flow of the input processing 103. Upon receiving the notification from the control unit 108 that the recording medium 111 has been inserted, the control processor 105 starts the insertion processing 103.

In step 500, a mount request is issued to the control unit 108, and the recording medium 111 inserted by the user into the slot 113 is mounted on the recording / reproducing device 112.

At step 501, a reproduction request is issued to the control unit 108, and the system area 30 of the recording medium 111 is issued.
The control information of 0 is reproduced, and the group name 302, the number of group media 303, the media number 304 in the group, and the media number 305 are obtained.

In step 502, the input processing control information 4
Referring to 00, if the insertion status 401 is “injection”, the process proceeds to step 504, and if the input status 401 is “non-injection”, the process proceeds to step 503.

At step 503, the input processing control information 4
00 is initialized. First, "injection" is set in the insertion status 401. Next, the current time is set as the insertion start time 402. Next, step 50 is added to the group name 403.
The group name 302 acquired in step 1 is set. Next, the same number of individual information 404 as the number of group media 303 acquired in step 501 is selected, and the selected individual information 40 is selected.
1, 2, 2,
The numbers are set as 3,. In addition, the selected individual information 4
“Unloaded” is set in the loading status 408 of “04”. next,
"NULL" which is a special value meaning invalid for the media number 406 in the group of the individual information 404 not selected.
Set. Thereafter, the process proceeds to step 507.

At step 504, the input processing control information 4
It is checked whether or not the group name 403 of 00 and the group name 302 obtained in step 501 are the same. If they are the same, the process proceeds to step 507; otherwise, the process proceeds to step 505.

In step 505, the display device 101 is controlled to notify the user that there is an abnormality or error in the insertion of the recording medium 111. Of course, the host 100 may be notified that there is an error or error in the insertion of the recording medium 111.

In step 506, a discharge request is issued to the control unit 108, and the recording medium 111 mounted in step 500 is transported to the discharge port 114.

In step 507, the media number 407 of the individual information 404 having the same in-group media number 406 as the in-group media number 304 acquired in step 501 is added to the media number 30 acquired in step 501.
5 is set, and "input completed" is set in the input status 408.

In step 508, a demount request is issued to the control unit 108, and the inserted recording medium 111 is stored in the storage shelf 110.

At step 509, the input processing control information 4
00, the media number 406 in the group is “N”
Input status 40 of all individual information 404 other than "ULL"
It is determined whether or not No. 8 is “input”, that is, whether or not all the recording media 111 constituting the array group have been input. Already in place ''
If not, the input process 103 ends.

In step 510, the display device 101 is controlled to notify the user that all the recording media 111 constituting one array group have been inserted.
Of course, the host 100 may be notified that all the recording media 111 constituting one array group have been inserted.

At step 511, the input processing control information 4
“No input” is set in the input status 401 of “00”, and the input process 103 ends.

FIG. 6 shows a processing flow of the input time monitoring processing 104. The control processor 105 starts the injection time monitoring process 104 periodically. Of course, the input time monitoring process 104 may be started according to a request from the host 100 or a user. This process is a process of notifying the user whether or not the insertion of the recording media 111 of the array group has been completed within a predetermined time.

At step 600, the input processing control information 4
With reference to the insertion status 401 of 00, if “insertion”, the process proceeds to step 601, and if “non-insertion”, the insertion time monitoring process 104 ends.

In step 601, the input processing control information 4
With reference to the input start time 402 of 00, the time at which the input of the array group was started is acquired.

In step 602, the time required to insert an array group is calculated from the time obtained in step 601 and the current time, and it is determined whether the calculated time exceeds a predetermined time. If it has exceeded, the process proceeds to step 603. If it has not exceeded, the input time monitoring process 1
04 is ended.

In step 603, the display device 101 is controlled to notify the user of a warning. Of course, host 1
00 may be notified of a warning.

In step 604, first, the input processing control information 400 is examined, and the media number 406 in the group is not "NULL" and the input status 408 is "input completed".
Is acquired. Next, a discharge request is issued to the control unit 108, the recording medium 111 corresponding to the obtained media number 407 is transported to the discharge port 114, and the insertion time monitoring process 104 is completed.

Next, a second embodiment will be described.

FIG. 7 shows a host 10 according to the second embodiment.
1 is a configuration diagram of an information processing system including a storage control device 102, a library control device 107, and a display device 101.
The first information processing system (FIG. 1) is a control processor 105 in which an input process 803 and an input time monitoring process 804 are performed.
To perform the I / O with the host 100 by storing the recording media 111 constituting one array group in different library devices 107 and mounting them on the recording / reproducing device 112 of each library device 107. Are different. 1 such as the host 100 and the display device 101
The functions of the portions denoted by the same reference numerals are the same as those of the first embodiment. However, the library device 107 is provided with an identifier for identifying each.

FIG. 8 shows control information stored in the control memory 106. The input processing control information 800 is stored in the control memory 106. Input processing control information 800
In the loading of the recording medium 111 constituting the array group, the loading process 703 and the loading time monitoring process 7
Reference numeral 04 denotes control information for managing the loading status of the recording medium 111. The loading process control information 800 includes one loading status 801, one loading start time 802, one group name 803, and a plurality of individual loading statuses. It consists of information 804. The loading status 801 is information indicating whether or not the recording media 111 constituting the array group has been loaded.
"On" means recording media 1 that constitutes an array group
11 indicates that the recording medium 111 constituting the array group has not been input. The group name 803 stores an identifier for identifying an array group. Input start time 8
02 indicates the time when the first recording medium 111 of the recording media 111 belonging to the array group identified by the group name 803 was inserted into the library device 107. One piece of individual information 804 is one piece of recording medium 11.
1, which includes a media number 806, a media number 807, a loading status 808, and a library number 808 in the group. Group media number 80
Reference numeral 6 denotes a number for identifying each recording medium 111 belonging to the same array group in the array group. A media number 807 is assigned to each recording medium 111 to identify each recording medium 111. Indicates a number. The loading status 808 is information indicating whether or not the recording medium 111 has been loaded into the library device 107. This indicates that the corresponding recording medium 111 has not been inserted yet. The library number 808 indicates an identifier for identifying the library device 107 that stores the recording medium 111.

FIG. 9 shows a processing flow of the input processing 703. Upon receiving the notification from the control unit 108 that the recording medium 111 has been inserted, the control processor 105 starts the insertion process 703.

In step 900, a mount request is issued to the control unit 108 that has issued the input notification, and the user inputs the input port 1
13 and the recording / reproducing apparatus 1
Mount on 12

In step 901, a reproduction request is issued to the control unit 108 that has issued the input notification, and the control information in the system area 300 of the recording medium 111 is reproduced.
02, group media number 303, group media number 304, and media number 305.

At step 902, the input processing control information 8
Referring to 00, if the insertion status 801 is “injection”, the process proceeds to step 904, and if the insertion status 801 is “non-injection”, the process proceeds to step 903.

In step 903, the input processing control information 8
00 is initialized. First, "injection" is set in the insertion status 801. Next, the current time is set as the insertion start time 802. Next, the step 90 is added to the group name 803.
The group name 302 acquired in step 1 is set. Next, the same number of individual information 804 as the number of group media 303 acquired in step 901 is selected, and the selected individual information 80 is selected.
1, 2, 2,
The numbers are set as 3,. In addition, the selected individual information 8
“Not-yet-inserted” is set in the insertion status 808 of 04. next,
"NULL" which is a special value indicating invalidity in the media number 806 in the group of the individual information 804 not selected.
Set. Thereafter, the process proceeds to step 908.

At step 904, the input processing control information 8
It is checked whether or not the group name 803 of 00 and the group name 302 acquired in step 901 are the same. If they are the same, proceed to Step 905;
Proceed to 06.

In step 905, the user sets two or more recording media 111 among the recording media 111 forming one array group to the same library device 107.
Is determined. In the present embodiment, the recording media 111 forming the array group are stored in different library devices 107 for use, so that two or more recording media 111 must not be put into the same library device 107. If the media number 806 in the group is "NU
LL ”, and the individual information 804 whose input status 808 is“ input completed ”is calculated, and the calculated individual information 804 is calculated.
Among them, it is determined whether or not the library number 809 is the same as the identifier of the library device 107 of the control unit 108 that has issued the input notification. If they are the same, the process proceeds to step 906;
Proceed to 8. In addition, a library device 107 for storing the recording media 111 constituting the array group is determined in advance, and in this step, the control unit 108 that has issued the in-group media number 304 obtained in step 901 and the input notification is held. Library device 107
It is determined whether or not the user has correctly inserted the recording medium 111 into the library apparatus 107 from the identifier of (1). If it is determined that the user has correctly inserted the recording medium 111, the process proceeds to step 908; You may proceed.

In step 906, the display device 101 is controlled to notify the user of a warning that there is an error in the manner of inserting the recording medium 111. Of course, the host 100
May be notified in the same manner.

In step 907, a discharge request is sent to the control unit 108 that has sent the input notification, and the input recording medium 111 is transported to the output port 114, and the input processing 703 ends.

At step 908, the media number 305 obtained at step 901 is set as the media number 807 in the individual information 804 having the same media number 806 within the group as the media number 304 within the group obtained at step 901. Is set to “OK”, and the identifier of the library device 112 of the control unit 108 that has issued the input notification is set to the library number 809.

In step 909, a demount request is issued to the control unit 108 that has issued the input notification, and the recording medium 111 is stored in the storage shelf 110.

In step 910, it is determined whether or not all the recording media 111 constituting one array group have been loaded into the library device 107. That is,
Referring to the input processing control information 800, all the individual information 8 in which the media number 806 in the group is not “NULL”
It is checked whether the input status 808 of “04” is “input”. If all are "input", the process proceeds to step 911. If there is "not yet input", the input process 703 is terminated.

In step 911, the display device 101 is controlled to notify the user that all the recording media 111 constituting one array group have been normally inserted into the library device 107. Of course, a similar notification may be sent to the host 100.

In step 912, "non-insertion" is set in the insertion status 801 and the insertion process 703 is terminated.

FIG. 10 shows a processing flow of the input time monitoring processing 704. This process is a process of monitoring whether or not the recording media 111 of the array group has been normally inserted into the library device 107 within a predetermined time. The control processor 105 periodically executes the closing time monitoring process 104.
To start. Of course, the input time monitoring process 104 may be started according to a request from the host 100 or a user.

In step 1000, referring to the loading status 801 of the loading processing control information 800, if "loading", the process proceeds to step 1001, and if "non-loading", the loading time monitoring process 704 is terminated.

In step 1001, the start time of the array group is obtained by referring to the input start time 802 of the input processing control information 800.

In step 1002, step 1001
Then, the time required to insert the array group is calculated from the time acquired in step 2 and the current time, and it is determined whether or not the calculated time exceeds a predetermined time. If it does, the process proceeds to step 1003. If it does not, the input time monitoring process 704 ends.

In step 1003, the display device 101 is controlled to notify the user of a warning. Of course, a warning may be notified to the host 100.

In step 1004, first, the input processing control information 800 is checked, and the media number 406 within the group is checked.
Is not “NULL”, and the media number 807 of the individual information 804 whose input status 808 is “input”
And a library number 809, and issues an ejection request to the control unit 108 of the library device 107 identified by the acquired library number 809. The storage medium 111 identified by the acquired media number 807
To the outlet 114.

In the above embodiment, one library device 107 stores recording media 1 belonging to one array group.
And a storage device subsystem that accommodates all the storage media 11 and performs I / O with the host 100 and a storage device 111 belonging to one array group,
07, a storage subsystem for performing I / O with the host 100 has been described. However, in the present invention, a plurality of sets of recording media 111 belonging to an array group are stored in a plurality of library devices 107. Host 10
The present invention can also be applied to a storage subsystem that performs I / O with 0.

[0069]

As described above, according to the present invention, it is possible to cope with a case where a user inserts a recording medium into an incorrect library by confirming information on an array group of recording media inserted into a library. can do.

[Brief description of the drawings]

FIG. 1 shows the overall configuration of a first embodiment of the present invention.

FIG. 2 is a diagram illustrating an array group.

FIG. 3 shows a recording format of a recording medium.

FIG. 4 shows control information stored in a control memory according to the first embodiment of the present invention.

FIG. 5 shows a processing flow of the input processing in the first embodiment of the present invention.

FIG. 6 shows a processing flow of an input time monitoring process in the first embodiment of the present invention.

FIG. 7 shows an overall configuration of a second embodiment of the present invention.

FIG. 8 shows control information stored in a control memory according to the second embodiment of the present invention.

FIG. 9 shows a processing flow of an input processing in the second embodiment of the present invention.

FIG. 10 shows a processing flow of an input time monitoring process in the first embodiment of the present invention.

[Explanation of symbols]

100: Host device, 101: Display device, 102: Storage control device 103: Input port, 107: Library device, 11
1: Recording media

Claims (7)

[Claims] 1. A storage subsystem for recording / reproducing data to / from an array group composed of a plurality of portable storage media, a storage means for storing the portable storage media, and a user input. Input means for receiving the portable storage medium, reproducing array group information recorded on the received portable storage medium, and correctly inserting the portable storage medium when the user inserts the array group A storage subsystem, comprising: a determination unit that determines whether or not the storage has been performed. 2. The storage subsystem according to claim 1, wherein said portable storage medium belonging to said array group is stored in one storage unit. 3. The storage subsystem according to claim 1, wherein said portable storage medium belonging to said array group is stored in a plurality of storage means. 4. The notifying means for notifying the user of a warning when the user determines that the portable storage medium is incorrectly inserted by the determining means in the storage device subsystem according to claim 1. A storage subsystem. 5. The storage device subsystem according to claim 1, wherein when the determination unit determines that the user has inserted the portable storage medium incorrectly, the user is notified of the portable storage medium. A storage device subsystem having a discharging means for passing the data. 6. The storage device subsystem according to claim 1, wherein said means for measuring a time for said user to insert all said portable storage media forming said array group, and forming said array group. A storage device subsystem, comprising: a notifying unit that notifies a warning to the user when a predetermined time has elapsed before all the portable storage media are inserted. 7. The storage subsystem according to claim 1, wherein said user measures time for inserting all said portable storage media constituting said array group, and said array group is constituted. If a predetermined time elapses before all the portable storage media are inserted,
A storage device subsystem, comprising: a discharging unit that transfers the already inserted portable storage medium to the user.