JP3109656B2 - Portable storage medium management system and information storage medium used to realize the system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable storage medium management system and an information storage medium used for realizing the system, and more particularly, to a portable storage medium such as a magnetic tape which can be used without waste. The present invention relates to a portable storage medium management system and an information storage medium used to realize the system.

[0002]

2. Description of the Related Art In the case of a general business processing system, all business data are saved on a magnetic tape (group) after one day of business processing is completed, and are saved when starting the next day business processing. In many cases, a business procedure is adopted in which business data is re-input from the magnetic tape (group) to the system to perform business processing, and the result is output to another magnetic tape (group). In such a case,
Magnetic tape (group) used to save the business data described above
Is definitely the most important issue.

[0003] As a conventional technique for managing a storage medium such as a magnetic tape or a file, for example, Japanese Patent Laid-Open No.
No. 1522, “Storage medium circulation use control method”
And a "file storage generation management method" described in JP-A-58-134355.

[0004] The prior art described in Japanese Patent Application Laid-Open No. 64-51522 discloses a management table in which a processing cycle, the number of magnetic tapes used, and a storage file name are registered, update date information stored in the magnetic tape itself, and actual processing. A magnetic tape to be output is determined based on the date and a request to load the magnetic tape is output. Also, Japanese Patent Application Laid-Open No. 58-134355
In the prior art described in Japanese Patent Laid-Open Publication No. H10 (1995), a table for registering the storage generation set for each file name is provided, and the generation for the file is obtained from the catalog file by recognizing the magnetic tape serial number set in the device. By checking whether the file of the magnetic tape set in the device is the storage generation by checking the storage generation from the table, the operator mistakenly sets the magnetic tape storing the file to be stored in the device. However, the file is prevented from being destroyed.

[0005]

Problems to be Solved by the Invention JP-A-58-1343
The conventional technique described in Japanese Patent Application Publication No. 55-55 is intended to check whether a file stored on a magnetic tape set by an operator is a file to be saved when business data is output to a magnetic tape. Further, the prior art described in Japanese Patent Application Laid-Open No. 64-51522 aims to select and determine a magnetic tape to be loaded based on the management table, update date information, and actual processing date described above. Therefore, none of the above prior arts considers the efficient use of the magnetic tape (group).

When a portable storage medium, for example, a magnetic tape (group) for saving business data without considering the remaining capacity of the magnetic tape is selected, the business data is overwritten on the magnetic tape (group). In some cases, a file overflow occurs due to insufficient storage capacity, and the process of saving business data must be interrupted.
In this case, after the job control statement described in JCL (job control language) is instructed for the evacuation processing, the magnetic tape having the insufficient capacity is exchanged, and the like, the evacuation processing of the business data is performed again. It has to be performed, and there has been a problem that the number of man-hours greatly exceeds the initial schedule. Therefore, in order to avoid interruption of the evacuation process due to the unexpected file overflow described above, a new magnetic tape (group) in which no business data has been evicted
It is conceivable that this magnetic tape (group) is used for the evacuation processing. However, if a new magnetic tape (group) is always used, even if the magnetic tape (group) currently in use has a sufficient remaining capacity, it will not be used and the purchase cost and storage space of the magnetic tape will be reduced. There was a problem that it could not be used efficiently.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve the above-described problems and to provide a portable storage medium management system for efficiently using a portable storage medium such as a magnetic tape with a minimum number of man-hours. An object of the present invention is to provide an information storage medium used to realize a system.

[0008]

In order to achieve the above object, a portable storage medium management system according to the present invention uses a predetermined portable storage medium registered in advance in a management database according to its storage capacity. In the management system of the portable storage medium for use without use, with the save output of the business data to the portable storage medium, the storage capacity required for the save output and the remaining capacity of the portable storage medium at the present time Usage status data including the usage status data obtained from the portable storage medium, and the usage status registration means for registering the usage status data in the management database; and At the time of the next evacuation output of the business data, based on the usage data and the usage data at the time of the evacuation output of the current business data, To predict the kicking the usage data,
And a use state prediction warning unit for performing a warning according to the prediction result.

As a result, a prediction result is obtained that in the prediction of the usage data at the next evacuation output to the portable storage medium, the storage capacity that will be required for the next evacuation output exceeds the current remaining capacity. Only when, if a warning message urging replacement of the portable storage medium is displayed to the operator as a warning corresponding to the prediction result,
Since it is possible to reduce the conventional man-hours required to grasp the usage status (remaining capacity, use start date, last update date, etc.) of portable storage media, it is possible to avoid interruption of the evacuation process due to file overflow In addition, it is possible to suppress the occurrence of work steps that exceed the initial schedule. In addition, the provision of a portable storage medium that exceeds the minimum capacity necessary for saving the business data is not required, so that the purchase cost and storage space of the portable storage medium can be efficiently used. Therefore, a portable storage medium such as a magnetic tape, a floppy disk, and a magneto-optical disk can be efficiently used with a minimum number of man-hours.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a portable storage medium management system according to the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a flow chart showing a schematic processing procedure according to an embodiment of the portable storage medium management system of the present invention. A case in which business data save processing is performed on a plurality of magnetic tapes by a multi-volume method will be described. When the operating system (OS) notifies the end of writing of the magnetic tape while the business data is being saved to one magnetic tape by a conventionally known procedure (step 101), processing is performed in accordance with the notification. The label information of the magnetic tape inside is read (step 102), and the usage status data of the magnetic tape included in the read label information is registered in a management database described later (step 103). The processing of steps 102 and 103 is the same as the "usage state registration means" in the claims.
It is due to.

If the type of the label information read in step 102 is the end-of-volume label, the magnetic tape being processed is replaced with the next magnetic tape, and the process of saving the business data is continued as it is (step 104 = No). ). On the other hand, if the type of the read label information is the end-of-file label, after predicting the next use status, which will be described later, in step 105, the next incremental usage amount obtained by the prediction, ie, saving the current business data It is determined whether or not the amount of data that will increase in comparison with the remaining capacity of the last processed magnetic tape is determined based on the corresponding usage data registered in the management database, and may be exceeded. If it is anticipated, a warning message to the effect that a new magnetic tape should be replenished at the time of the next evacuation of the business data is displayed to the operator by VDT or the like (step 107). The processing of steps 105 to 107 is performed by the "usage prediction warning means" in the claims.

FIG. 2 is a diagram showing a specific example of the usage data registered in the management database in FIG. In the figure, in the management database 2, usage status data 200 of a magnetic tape group used for saving business data is registered in a table format. Usage data 200
, 210, 220, and 230 indicate the use status of one volume of magnetic tape, respectively, a file name 201 for identifying business data recorded on the magnetic tape, a volume serial number 202 unique to the magnetic tape, and the previous and current business The previous used amount 203 and the current used amount 204, which are the capacities of the magnetic tape required to save the data, and the remaining unused capacity 20 of the total capacity of the magnetic tape.
5. Various data such as a use start date 206 when the magnetic tape is used for the first time and a last update date 207 when the business data is lastly saved to the magnetic tape are used for saving the business data. Recorded for each magnetic tape. Therefore, according to the usage data 200 shown in FIG. 2, the business data file “FILE001” is
The three volumes of magnetic tape "VOL001", "VOL002", and "VOL003" with a total capacity of 2000, which started operation on January 1, 1996, have been evacuated, and the remaining capacity of the last volume of magnetic tape "VOL003" is 400.

FIG. 3 is a flowchart showing a specific example of the procedure for estimating the use situation in FIG. 1, and is based on the premise that the total amount of business data to be saved increases at a substantially constant rate. An example of the processing procedure in step 105 of FIG. That is, in the case of the usage data of FIG.
The three volumes of magnetic tape "VOL001", "VOL002",
When all backup of business data to “VOL003” is completed,
Based on the usage data 200 registered in the management database 2, the total magnetic tape usage Uo at the time of the previous evacuation of the business data and the total magnetic tape usage Un at the time of the current evacuation of the business data are Each is calculated (step 301). Therefore, the values of Uo and Un are obtained as follows: Uo = 2000 + 2000 + 1200 = 5200 Un = 2000 + 2000 + 1600 = 5600. Then, Uo calculated by the above
Based on the values of Un and Un, the elongation Ur of the current magnetic tape total usage to the previous magnetic tape total usage is calculated (step 302). Therefore, the value of Ur is obtained as follows: Ur = (Un−Uo) / Uo = (5600−5200) /5200=1/13=0.0769 Finally, the calculated U
Based on the values of n and Ur, the next incremental usage (the storage capacity expected to be further required at the time of the next evacuation of business data) ΔU is predicted (step 303). Here, the value of ΔU is obtained as follows: ΔU = Ur × Un = 0.0769... × 5600 = 430.769. In this case, since the value of ΔU exceeds the remaining capacity of the last magnetic tape “VOL003”, a warning message is displayed in step 107 in FIG.

As described above, the prediction of the usage data in the next save and output of the business data to the magnetic tape indicates that the storage capacity required for the next save and output of the business data exceeds the remaining capacity at the present time. Only when the prediction result is obtained (when the above-mentioned ΔU is larger than the remaining capacity of the magnetic tape of the last volume), a warning message prompting replacement of the magnetic tape is displayed to the operator as a warning corresponding to the prediction result. By using this method, conventional man-hours (command input, confirmation of response values, comparison with management ledger, etc.) that were necessary to grasp the usage status of magnetic tape (remaining capacity, use start date, last update date, etc.) Judgment, etc.), avoiding interruption of the evacuation process due to file overflow, and work man-hours exceeding the initial schedule (magnetic Tape rewind, rewriting of job control language, can reduce the occurrence of, for example, loading and initialization of the new magnetic tape). In addition, since the provision of a magnetic tape exceeding the minimum capacity necessary for saving the business data is not required as described above, the purchase cost and storage space of the magnetic tape can be efficiently utilized. Therefore, the magnetic tape can be used efficiently with a minimum number of work steps.

In the above embodiment, the case where a magnetic tape is used as a portable storage medium has been described. However, other similar effects can be obtained by using a floppy disk or a magneto-optical disk. it can.
Further, a first program-related file group that realizes the above-described use state recording unit and a second program-related file group that realizes the use state prediction notifying unit include, for example,
It can be provided in a form stored in an information storage medium such as a floppy disk or a CD-ROM.

[0017]

As described above in detail, according to the portable storage medium management system of the present invention, it is necessary for the next save output to predict the use state data in the next save output to the portable storage medium. Only when a predicted result that the expected storage capacity exceeds the remaining capacity at the present time is obtained, a warning message prompting replacement of the portable storage medium is displayed to the operator as a warning corresponding to the predicted result. If this is the case, it is possible to reduce the conventional man-hours required for grasping the usage status (remaining capacity, use start date, last update date, etc.) of the portable storage medium, so that the evacuation process is interrupted due to file overflow Can be avoided, and the occurrence of man-hours exceeding the initial schedule can be suppressed. In addition, the provision of a portable storage medium that exceeds the minimum capacity necessary for saving the business data is not required, so that the purchase cost and storage space of the portable storage medium can be efficiently used. Therefore, magnetic tapes, floppy disks,
A portable storage medium such as a magneto-optical disk can be used efficiently with a minimum number of work steps.

[Brief description of the drawings]

FIG. 1 is a flowchart showing a schematic processing procedure according to an embodiment of a portable storage medium management system of the present invention.

FIG. 2 is a diagram showing a specific example of usage status data registered in a management database in FIG. 1;

FIG. 3 is a flowchart showing a specific example of a procedure for estimating a use situation in FIG. 1;

[Explanation of symbols]

 200 Usage data 201 File name 202 Volume serial number 203 Previous usage 204 Current usage 205 Remaining capacity

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-57-69514 (JP, A) JP-A-61-52733 (JP, A) JP-A-2-41521 (JP, A) JP-A-7-57 210326 (JP, A) JP-A-8-30682 (JP, A) JP-A-64-51522 (JP, A) JP-A-58-134355 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G06F 3/06 G06F 12/00 501

Claims (3)

(57) [Claims] 1. A portable storage medium management system for using a predetermined portable storage medium registered in advance in a management database without waste according to its storage capacity, comprising: a storage unit for storing business data in the portable storage medium; With the evacuation output,
Usage status registration for obtaining usage status data including the storage capacity required for the evacuation output and the current remaining capacity of the portable storage medium from the portable storage medium, and registering the usage status data in the management database. Means for saving and outputting the next business data based on the usage data at the time of saving and outputting the previous business data registered in the management database and the usage data at the time of saving and outputting the current business data. 3. A portable storage medium management system according to claim 1, further comprising: a use state prediction warning unit that predicts the use state data and issues a warning according to the prediction result. 2. The management system for a portable storage medium according to claim 1, wherein said portable storage medium is a magnetic tape, a floppy disk, a magneto-optical disk, or the like. 3. A first method for realizing the use status recording means.
3. A portable storage medium management system according to claim 1, wherein a group of program-related files and a second group of program-related files for realizing the use status prediction notifying means are recorded. Information storage medium used for