JPS63168751A - Hierarchical recording control system - Google Patents

Abstract

PURPOSE:To contrive to decrease the processing time by referving to relating information of a file and writing an updated part in each file subjected to multiplex processing successively when a multiplex file exists in other locations to write the same updating information in other file multiplexed on plural data storage media simply. CONSTITUTION:When an updated part 9 is written in a file 3 of a data storage medium 1, after the end of write, a high-speed data access control section 6 refervs to a multiplex file management memory 13 to check whether or not a multiplexed file corresponding to the file 3 exists in other locations. As a result, when a file name corresponding to the file 3 is found out on a multiplex file management memory 13, a high-speed data access control section 6 reads the number of multiplex and a data storage medium name or the like, refervs to a high-speed data access medium management table 12 to write sequentially the updated part 9 of the high-speed data access medium 5 in the file of each storage medium.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention uses a hierarchical recording control method, that is, when a file is updated in a one-layer recording device, the updated portion is multiplexed on a data storage medium. This invention relates to a hierarchical recording control method that allows writing to all files.

[Conventional technology]

An example of a conventional recording control method will be explained based on FIG. 2. In FIG. 2, 1 and 2 are data storage media, and 3 is a file stored on the storage medium 1.

When updating the file 3, the high-speed data access control unit 6 transfers the file 3 onto the high-speed data access medium 5, and the update process is performed under the control of the high-speed data access control unit 6. Note that 7 indicates a file update request program that requests the high-speed data access control section 6 to update a file stored on the data storage medium.

The file update request program 7 specifies a file name and requests the high-speed data access control unit 6 to update the file. The high-speed data access control unit 6 checks whether the file has already been read out from the data storage medium onto the high-speed data access medium 5 using the high-speed data access medium management table 12, and if the file has not been read out, , reads the specified file onto the high-speed data access medium 5, records the fact in the high-speed data access medium management table 12, and then performs update processing.

If the designated file has already been read out from the data storage medium onto the high-speed data access medium 5, the above reading process is omitted and the update process is performed.

8 on the high-speed data access medium 5 is stored in the file 3 on the data storage medium 1 by the high-speed data access control unit 6.
9 shows a state of being read out onto the high speed data access medium 5, and 9 represents a portion updated by the high speed data access control unit 6 on the medium.

Once the update process is completed on the high-speed data access medium 5,
The high-speed data access control unit 6 saves the updated information from the high-speed data access medium 5 to the data storage medium. Note that 10 indicates a state in which the data 9 updated on the high-speed data access medium 5 is saved onto the data storage medium 1 by the high-speed data access control unit 6.

[Problem that the invention seeks to solve]

In the above recording control method, since the file update request program 7 manages multiple recording of files, the file update request program 7 sends file update requests to the high-speed data access control unit 6 for the number of multiplexed files. In addition to requiring a request, the high-speed data access control unit 6 uses the high-speed data access medium management table 12 to check whether the specified file is on the high-speed data access medium 5 or
If the file does not exist on the high-speed data access medium 5, it is necessary to read the file from the data storage medium onto the high-speed data access medium 5 and then execute update processing. was there.

The present invention has been made in view of the above circumstances, and its purpose is to solve the above-mentioned problems in conventional recording control methods, and to provide a method for multiplexing the same update information on multiple data storage media. The object of the present invention is to provide a hierarchical recording control method that allows easy writing to files.

[Means for solving problems]

The above-mentioned object of the present invention is to provide a recording control system that transfers a file on a data storage medium to a high-speed data access area, updates the file, and writes the updated portion to the corresponding storage medium. If the same file is multiplexed and saved, the related information of the multiplexed file is saved, and after the update process is performed, when writing the updated part to the data storage medium, the file is saved. This is achieved by a hierarchical recording control method characterized in that, when there are other multiplexed files, the updated portion is subsequently written to each multiplexed file by referring to related information of the multiplexed file.

[Effect]

In the present invention, management information for associating multiplexed files is held in the high-speed data access control unit, and when a file update request is requested from the file update request program to the high-speed data access control unit, the By referring to the management information that associates the multiplexed files with the high-speed data access control unit, all multiplexed files can be updated by issuing only one update request from the file update request program. It is something.

〔Example〕

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

FIG. 1 is a block diagram of a hierarchical recording control system showing one embodiment of the present invention, and symbols 1 to 3, 5 to 10, and 12 indicate the same components as previously shown in FIG. 2.

Reference numeral 4 indicates the same file as 3 that is multiplexed and stored on the data storage media 1 and 2, and 13 is a multiplexed file management memory that holds management information that associates the multiplexed files. The management information includes, for example, a multiplexed file name, a multiplexed number, a data storage medium name, and the like. This management information is registered in 0 to n of the multiplexed file management memory 13 for the number of multiplexed files.

The operation of this embodiment configured as described above will be explained below.

When updating the file 3 according to a request from the file update request program 7, the high-speed data access control section 6 first transfers the file 3 on the recording medium 1 to the high-speed data access medium 5. As mentioned above, 8 indicates a state in which the file 3 on the data storage medium 1 is read out onto the high-speed data access medium 5 by the high-speed data access control unit 6, and the high-speed data access control unit 6 reads out the file 3 on the high-speed data access medium 5. Update processing is executed for file 8 on file 5. Further, reference numeral 9 indicates a portion updated by the high speed data access control section 6 on the high speed data access medium 5.

In the above update process, update addresses that require processing are recorded in the high speed data access medium management table 12. When the update process is completed, the high-speed data access control unit 6 refers again to the high-speed data access medium management table 12 and writes the updated portion 9 to the corresponding address of the corresponding file 3 on the data storage medium 1.

Up to this point, the process is the same as the prior art described above, but in the operation of this embodiment, when writing the updated portion 9 to the file 3 of the data storage medium 1, or after the writing is completed,
The high-speed data access control unit 6 refers to the multiplexed file management memory 13 and investigates whether there are any other multiplexed files corresponding to the file 3. As a result, if a file name corresponding to file 3 is found on the multiplexed file management memory 13, the high-speed data access control unit 6 reads the multiplexing number, data storage medium name, etc., and With reference to the medium management table 12, the updated portion 9 of the high-speed data access medium 5 is sequentially written to the files of each multiplexed recording medium. In addition,
Reference numeral 11 shows a state in which an updated portion 9 has been written to the file 4 of the data storage medium 2 that corresponds to the file 8 of the high-speed data access medium 5.

According to the above embodiment, the file update request program 7 requests the high-speed data access control unit 6 to write on the data storage medium only once, and the high-speed data is transferred from the data storage medium each time a multiplexed file is updated. Since there is no need to read multiplexed files onto the access 5 medium, processing time can be shortened, and the interface between the file update request program 7 and the high-speed data access control unit 6 can be simplified. There is.

It goes without saying that the above-mentioned embodiments are shown as examples, and the present invention should not be limited to the scope of the above-mentioned embodiments.

[Effects of the Invention] As described above, according to the present invention, the recording control method transfers a file on a data storage medium to a high-speed data access area, performs update processing on the file, and writes the updated portion to the corresponding storage medium. In this method, when the same file is multiplexed and stored on multiple data storage media, information related to the multiplexed files is saved, and after the update process is performed, the updated portion is transferred to the data. When writing to a storage medium, if there are other multiplexed files by referring to the related information of the file, the updated portion is subsequently written to each multiplexed file, so the same updated information can be written. This has the remarkable effect of realizing a hierarchical recording control method that allows easy writing to other files multiplexed on a plurality of data storage media.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a hierarchical recording control system showing an embodiment of the present invention, and FIG. 2 is a block diagram showing an example of a conventional recording control system. 1.2: data storage medium, 3, 4: file on data storage medium, 5: high speed data access medium, 6: high speed data access control unit, 7: file update request program,
8: File on high-speed data access medium, 9,1σ,
11: File update portion, 12: High speed data access medium management table, 13: Multiplexed file management memory.

Claims (1)

[Claims] (1) In a recording control method in which a file on a data storage medium is transferred to a high-speed data access area, the file is updated, and the updated portion is written to the corresponding storage medium, the same file is transferred on multiple data storage media. If multiplexed files are saved, the related information of the multiplexed files is saved, and after the update process is performed, when writing the updated part to the data storage medium, the related information of the files is saved. A hierarchical recording control method characterized in that when there are other multiplexed files as reference, the updated portion is subsequently written to each of the multiplexed files.