JPH04243438A - Management system for storage device - Google Patents

Abstract

PURPOSE:To systematically set an assigned capacity to a virtual storage management device optimum for a service system from among the available assigned capacity of the storage device by a system manager and to efficiently operate the system by setting the assigned capacity to a virtual storage management device number for each storage device. CONSTITUTION:When information is inputted/outputted to/from a storage device 11, a corresponding storage device number 122 is extracted from a virtual storage management table 12 based on a virtual storage management device number 121 assigned by a service program. Then a virtual volume label 112 and a file management label 113 are searched in the storage device 11 based on the storage device number 122 to find an applicable file 114 and the information is inputted/outputted.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to a device number management method for storage devices, and in particular, a virtual management method effective for device management systems that are not limited by the capacity of the device and require optimal capacity settings. It is related to.

0002

2. Description of the Related Art Conventionally, a device number management system for this type of storage device sets a device number corresponding to the storage device,
The management method was to directly specify a device number from the business program and associate the device where the file resides, or to group the device numbers and specify the group number to associate the device where the file resides.

0003

[Problems to be Solved by the Invention] In the conventional storage device management method described above, the physical capacity of the storage device is the limit for the storage device. business programs will be subject to certain restrictions.

In particular, when considering the amount of data for each business and dividing the business data into storage devices, it is necessary to perform dual management of data for each business and data for each storage device.

[0005] Conventional storage device management systems have the drawback that data management can only be performed on a device-by-device basis, and data management on a business-by-business basis requires manual management.

[0006]

[Means for Solving the Problems] The storage device management method of the present invention sets a virtual storage management device number, determines the correspondence between the virtual storage management device number and the storage device number, and determines the storage assigned to the virtual storage management device number. A management table for registering capacity and virtual memory management within the storage device used to select information from the storage device with the storage device number extracted from the management table mentioned above when inputting/outputting information from the virtual storage management device. and virtual volume label information for managing device allocation status.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be explained in detail with reference to the drawings.

FIG. 1 shows a configuration representing one embodiment of the present invention. The virtual memory management method of the storage device of this embodiment is a virtual memory that manages the correspondence between a plurality of storage devices 11 that store data, a virtual storage management device number handled by a business program, and a storage device number that actually stores data. The main part is composed of the management table 12.

The storage device 11 includes a volume label 111 for managing storage device numbers, a virtual volume label 112 for managing which virtual storage management device information in the storage device belongs to, and a file management label 113 for managing files. and a file 114 for managing information.

The virtual storage management table 12 includes a virtual storage management device number 121 in which a virtual storage device number is registered, a storage device number 122 in which information of the virtual storage management device number 121 physically exists, and a storage device number 122. It is configured to include a storage capacity 123 of a virtual storage device to be allocated to. Further, the storage capacity 123 further includes an allocated capacity 1231 representing the allocated capacity and a used capacity 1232 representing the current usage amount.

Next, the operation and usage of this embodiment will be explained step by step.

When inputting/outputting information from the storage device 11, first, based on the virtual storage management device number 121 specified by the business program, the corresponding storage device number 122 is extracted from the virtual storage management table 12. Next, based on this storage device number 122, the virtual volume label 122 and file management label 113 in the storage device 11 are searched to find the corresponding file 114, and information is input and output.

Furthermore, when registering information as a file in the storage device 11, the virtual storage management table 1 is registered based on the virtual storage management device number 121 specified in the business program.
When extracting the corresponding storage device number 122 from 2,
The capacity difference between the allocated capacity 1231 and the used capacity 1232 in units of the specified storage device number is compared with the capacity to be registered this time, and the first registerable device is registered. If registration is not possible with a single device, registration is performed by dividing into a plurality of specified storage devices (file 114 and file management label 113 are registered). At this time, the used capacity 1232 of the virtual memory management table 12 is increased by the registered amount.

Furthermore, when deleting information on the storage device 11 file by file, contrary to the case of registration, the information on the storage device 11 (file 114 and file management label 113) retrieved from the virtual storage management table 12 is deleted. At the same time, the used capacity 1232 of the virtual memory management table 12 is reduced by the amount of information deleted.

FIGS. 2A, 2B, and 2C are diagrams showing examples of a volume label 111, a virtual volume label 112, and a file management label 113, respectively, for realizing the storage device management method of this embodiment. It is. The volume label 111 and file management label 113 have the same contents as the labels when the virtual management method of the present invention is not used.

Allocated capacity 12 of virtual memory management table 12
By modifying 31, the virtual volume label 11
2 is automatically maintained, and the capacity of the virtual storage management device can be changed freely.

[0017]

As explained above, the present invention sets a virtual memory management device number and a virtual memory management table as a means for inputting/outputting to a storage device, By associating device numbers and setting the allocated capacity for each storage device for virtual storage management device numbers, system administrators can manage virtual storage optimally for business systems within the given storage device capacity. This has the effect of allowing the system to be operated efficiently by setting the allocated capacity of devices in a planned manner.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

[Fig. 2] Volume label 111, virtual volume label 112, and file management label 1 in storage device 11
13 is a diagram showing the contents of No. 13.

[Explanation of symbols]

11. Storage device 111 Volume label 112 Virtual volume label 113 File management label 114 File 12 Virtual memory management table 121 Virtual storage management device number 122 Storage device number 123 Storage capacity 1231 Allocated capacity 1232 Usage capacity

Claims (1)

[Claims] Claim 1: A management table for setting a virtual memory management device number, registering the correspondence between the virtual memory management device number and the storage device number, and a storage capacity to be allocated to the virtual memory management device number; and virtual volume label information that manages the virtual storage management device allocation status in the storage device used to select information from the storage device with the storage device number extracted from the management table mentioned above when inputting and outputting information. A storage device virtual management method characterized by: