JP2546404B2 - Magnetic tape media maintenance management method - Google Patents

Description

The present invention relates to a magnetic tape medium maintenance management system.

[Conventional technology]

The magnetic tape is frequently loaded and removed, and the medium is severely deteriorated. It is necessary to replace the deteriorated medium.

However, conventionally, the medium maintenance information on the magnetic tape is not held and it is the responsibility of the user to judge whether the medium is deteriorated.

[Problems to be Solved by the Invention]

In the above-mentioned conventional medium maintenance management based on the user's judgment, since no reference information is provided, a deteriorated magnetic tape may be used to cause a medium failure or a device failure.

[Means for solving the problem]

The system of the present invention has a storage means for each device, and cumulatively holds error information such as the total number of input / outputs on the device, the number of errors at the time of input / output, the number of successful retry errors, etc. In response to a request from the host computer, a function for reading the error information, a function for clearing the error information accumulated by an instruction from the host computer, and a function for the host computer when a medium is loaded on the device and input / output becomes possible In the magnetic tape medium maintenance management method in a system having a magnetic tape device having a function of reporting a caution event, the use start date, the number of times of loading, the last use date,
A media maintenance information management file that manages the maintenance information of the number of errors as a media maintenance management record, and a media maintenance management record of a specified media whose execution date is the media usage start date according to an instruction from the program are written to the media maintenance management file. The medium maintenance information management record registration means and the medium maintenance information management record for the medium having the designated medium name are read, and the number of times of loading in the record is 1
The load number update stage for writing the medium maintenance information management record and the caution event report at the time of loading from the device are received, the medium name is recognized for the medium, and the medium load is performed to the load number updating means. The medium recognition means that requests the update of the number of times and the medium maintenance information management record for the medium to be removed when the loaded medium is removed, and the last use date in the record is taken as the date of removal, and the medium maintenance information Means for updating the last use date to be written in the management file, and means for reading out the error count at the time of input / output from the error information of the medium to be removed when the medium being loaded is removed, and at the same time clearing the error information, When removing the loaded media, manage the media maintenance information about the removed media. The record is read, the error count in the record is replaced by the error count obtained by the error information fetching means, the error count updating means for writing to the medium maintenance information management file and the loaded medium are removed, and at the same time, It is characterized by including a final date updating means and a removing means for calling the error information fetching means.

〔Example〕

 Next, the present invention will be described with reference to the drawings.

 FIG. 1 is a diagram showing the configuration of the invention.

In the figure, 1 is a magnetic tape that is the target of medium maintenance information management, and 2 is the magnetic tape 1 loaded,
A magnetic tape device (hereinafter referred to as a device) that enables tape input / output. Although only one unit is shown in FIG. 1, there may be a plurality of units. The magnetic tape device 2 has a storage means for each device and accumulates error information such as the total number of input / outputs on the device 2, the number of errors at the time of input / output, the number of successful retry errors, and the like, according to a request from the host computer. A function to read error information, a function to clear the error information according to an instruction from the host computer, and a function to report a caution event to the host computer when a medium is loaded on the device 2 and input / output becomes possible. Have.

3 writes the medium maintenance information management record 14 in the medium maintenance information management file 13 described later. It is a writing means. The medium maintenance information management record 14 has medium maintenance information of a medium name, a use start date, a last use date, a load count and an error count for each medium.

Reference numeral 4 is a reading means for reading the corresponding medium maintenance information management record 14 from the medium maintenance information management file 13 using the designated medium name as a key.

Reference numeral 5 is a medium maintenance information management record 14 in the medium maintenance information management file 13 using the writing means 3 and the reading means 4.
Is a medium maintenance information management file registration means. When this means 5 specifies the medium name of the medium for which maintenance information is to be obtained, the reading means 4 searches the medium name of the medium maintenance information management record 14 in the medium maintenance information management file 13 and the same medium name has already been registered. If it is not registered yet, the medium maintenance information management record 14 of the specified medium whose execution date is the medium use start date is registered by the writing means 3 when the program has instructed it. .

Reference numeral 6 denotes a medium recognition means for recognizing the medium name when the magnetic tape is loaded. The medium recognition means 6 receives a caution event report at the time of loading from the device 2, recognizes the medium name for the medium, and informs the loading frequency updating means 7 of the medium. Request update of load count.

Reference numeral 7 denotes a load number updating means for updating the load number of the medium maintenance information management record 14 by using the writing means 3 and the reading means 4 when the medium is loaded. That is, for the medium having the medium name obtained by the medium recognizing means 6 at the time of loading the medium, the reading means 4 reads the medium maintenance information management record 14, and if a corresponding record exists, adds 1 to the number of times of loading in the record. The medium maintenance information management record 14 in the medium maintenance information management file 13 is written using the writing means 3.

Denoted at 8 is a removing means for removing the medium when the loaded medium is processed, and for calling the last use date updating means 9 and the error information capturing means 10 which will be described next.

Reference numeral 9 denotes a last use date updating means for updating the medium last use date of the medium maintenance information management record 14 by using the writing means 3 and the reading means 4 at the time of removal. That is, when called from the removing means 8 when removing the medium,
For the medium to be removed, the medium maintenance information management record 14 is read by the reading means 4, and if the corresponding record exists, the writing means 13 is used to set the last use date in the record, and the removal date is set to the medium last by the instruction from the program. The medium maintenance information management record 14 in the medium maintenance information management file 13 is written as the use date.

Reference numeral 10 is an error information fetching means for reading the error information of the magnetic tape device and then clearing the error information. This is called by the removing means 8 when the medium is removed, and the error information removing means 8 accumulated and held in the device 2 is removed.
After reading the input / output error count from the input / output error count, passing the input / output error count to the error count update means 11 if instructed by the error count update means 11, and reading the error information via the removal means 8. Clears the error information.

11 is an error information capturing means 10 when the medium is removed,
It is an error count updating means for updating the error count of the medium maintenance information management record 14 using the writing means 3 and the reading means 4.

That is, regarding the medium to be removed when removing the medium,
The medium maintenance information management record 14 is read by the reading means 4, and if there is a corresponding record, the error information reading means 10 is used to receive the number of input / output errors, and the writing means 3 is used as the number of errors in the record.
The number of errors received from the error information updating means 10 is newly set as the number of errors, and the medium maintenance information management record 14 is written.

A medium maintenance information output unit 12 outputs the medium maintenance information read by the reading unit 4. When the medium name for which the maintenance information is desired is designated by the program, the medium maintenance information management record 14 is read by the reading means 4, and if the designated medium is registered as the medium maintenance information management record 14, the record is edited. Output. The media user views this output report and uses it as a measure of how deteriorated the media is.

Reference numeral 13 is a medium maintenance information management file that stores information for managing the medium maintenance information, which is created when the medium maintenance information management of the magnetic tape 1 is desired and is performed.
It is possible to have a plurality of 14, and the medium maintenance information management record 14 can be searched for as the medium name and device number key.

Reference numeral 14 is a media maintenance information management record containing media maintenance information, including the media name, start date of use, date of last use,
The number of times of loading and the number of times of error are stored, and the medium name and start date of use remain the same as those registered at the time of registration. Will be updated.

〔The invention's effect〕

As described above, according to the present invention, for all the magnetic tape media used, the information necessary for judging the deterioration of the media such as the usage status, the number of errors in the latest usage, etc. can be obtained at any time, This has the effect of preventing the occurrence of failures and equipment failures.

[Brief description of drawings]

FIG. 1 is an overall view of the present invention. 1 ... magnetic tape, 2 ... magnetic tape device, 3 ... writing means, 4 ... reading means, 5 ... medium maintenance information management record registration means, 6 ... medium recognition means, 7 ... load count updating means , 8 ... Removal means, 9 ... Last use date update means, 10 ... Error information acquisition means, 11 ...
Error number updating means, 12 ... Medium maintenance information management output means, 13 ... Medium maintenance information management file, 14 ... Medium maintenance information management record.

Claims (1)

(57) [Claims] 1. A host computer having storage means for each device, accumulating and retaining error information such as the total number of input / outputs on the device, the number of errors at the time of input / output, and the number of successful retry errors in the storage means in the previous period. In response to a request from the host computer, a function for reading the error information, a function for clearing the error information accumulated by an instruction from the host computer, and a function for the host computer when a medium is loaded on the device and input / output becomes possible In the magnetic tape medium maintenance management method in a system having a magnetic tape device having a function of reporting a caution event, the maintenance information such as the start date of use, the number of times of loading, the date of last use, and the number of errors is recorded in the medium maintenance management record. The media maintenance information management file that is managed as And a medium maintenance information management record registration means for writing the medium maintenance management record of the designated medium to the medium maintenance management file, and reading the medium maintenance information management record for the medium having the designated medium name, and determining the number of times of loading in the record. 1 is added and the load number update means for writing the medium maintenance information management record and the caution event report at the time of loading from the device are received, the medium name is recognized for the medium, and the medium is notified to the load number update means. The medium recognition means that requests the update of the load count and the medium maintenance information management record for the medium to be removed when the loaded medium is removed, and the last use date in the record is taken as the date of removal, and the medium maintenance The last used date update method to write to the information management file and the removal of the loaded medium. Occasionally, regarding the medium to be removed, an error information acquisition unit that reads the error count at the time of input / output from the error information and clears the error information at the same time, and medium maintenance information management for the medium to be removed when the loaded medium is removed The record is read, the error count in the record is replaced with the error count obtained by the error information fetching means, the error count updating means for writing to the medium maintenance information management file, and the loaded medium are removed, and at the same time A magnetic tape medium maintenance management system, characterized in that it includes a final date updating means and a removing means for calling an error information fetching means.