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Storage system and storage device archive control method

a storage system and control method technology, applied in the field of storage system and storage device archive control method, can solve the problem of inconvenient storage for later data utilization

Inactive Publication Date: 2006-08-10
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a storage system and a storage device that can produce add-on type volumes using random access memory devices. The system allows for the storage of data files with different retention terms and prevents data alteration. The system also allows for the repeated re-utilization of the storage device by writing data into the volumes and controlling the areas where data is written as write prohibited areas. The system can manage file data of different types and store them in mixed storage. The control part uses write prohibiting pointers to manage the write prohibited areas and prevent writing into these areas. Overall, the invention improves the convenience and efficiency of the storage system.

Problems solved by technology

Moreover, for example, in cases where data is stored in add-on devices such as CD-Rs or the like in order to prevent data alteration, since such devices have a relatively low output speed, such storage is inconvenient for later data utilization.

Method used

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  • Storage system and storage device archive control method
  • Storage system and storage device archive control method
  • Storage system and storage device archive control method

Examples

Experimental program
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first example

1. FIRST EXAMPLE

[0098]FIG. 2 is a block diagram showing an overall outline of the storage system of the present invention. For example, as will be described later (respectively), this storage system can be constructed so that the system comprises a host 10, an archive managing terminal 20, a switch 30, a storage managing terminal 40, and a storage device 100.

[0099] For example, the host 10 can be classified as an open type host or a main frame type host. Examples of open type hosts include server machines that mount an all-purpose OS (operating system) such as Windows (registered trademark), UNIX (registered trademark) or the like, and that access the storage device 100 via a relatively all-purpose communications protocol such as FC (Fibre Channel), iSCSI (Internet SCSI), TCP / IP (Transmission Control Protocol / Internet Protocol) or the like. Examples of main frame type hosts include main frame machines that access the storage device 100 via a communications protocol such as FICON (F...

second example

2. SECOND EXAMPLE

[0185] A second example will be described with reference to FIGS. 12 through 26. In this example, files that are the object of archiving are classified beforehand, and the system is devised so that archiving is performed automatically with the archive period defined for each type of file. Furthermore, in this example, the archive volume is recycled using a plurality of write prohibiting pointers. This example corresponds to a modification of the first example, and all or part of the construction described in the first example may be cited if necessary.

[0186]FIG. 12 is a block diagram which shows the main construction of the storage system in schematic form. As in the first example, this storage system comprises a host 10, an archive managing terminal 20, and a storage device 100. The storage system of the present example comprises all of the construction described with reference to FIG. 2; here, a redundant description is omitted.

[0187] The host 10 can be construc...

third example

3. THIRD EXAMPLE

[0284] A third example will be described with reference to FIG. 27. In the present example, the stored contents of the file management area 410 are restored on the basis of the file management information 431 stored in the data storage area. FIG. 27 is a flow chart showing the processing that restores the file management information 411 stored in the file management area 410.

[0285] The control part 200 (or 200A, same below) judges whether or not the file management information 411 in the file management area 410 is to be restored (S241). Specifically, the control part 200 judges whether or not this processing is to be started. This processing can be started manually or automatically.

[0286] In cases where restoration processing is to be started (S241: YES), the control part 200 reads out the initial file management information 431 stored in the data storage area 420 (S242), creates file management information 411 corresponding to this file management information 431...

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Abstract

The present invention performs appropriate archive management using a device that allows random access. An archive managing part 1B reads out files stored in an on-line volume 5A at a timing determined by the respective file type, and stores these files in a specified volume among archive volumes 5B1 and 5B2. A retention term is designated for each set of file data, and respective retention terms are also set for the respective volumes 5B1 and 5B2. The file data is stored in a volume having a retention term that matches the retention term of the file data. The respective volumes 5B1 and 5B2 are set in a device that allows random access such as a hard disk or the like. The areas in which data is written into the respective volumes 5B1 and 5B2 are managed as write prohibited areas by means of pointers P. As a result, the respective volumes 5B1 and 5B2 are used as a so-called WORM device.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application relates to and claims priority from Japanese Patent Application No. 2005-30366 filed on Feb. 7, 2005, the entire disclosure of which is incorporated herein by reference. BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The present invention relates to a storage system and a storage device archive control method. [0004] 2. Description of the Related Art [0005] For example, a storage device constructs storage areas based on an RAID (redundant array of independent disks) using a memory device such as a hard disk drive, semiconductor memory drive or the like. For example, these physical storage areas (logical volumes) are provided to a host computer such as a server machine or the like. [0006] The host computer provides information processing services to client terminals connected to the host computer by writing data into the logical volumes and reading data out of the logical volumes. For example, variou...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G06F17/30G06F21/60G06F21/80
CPCG06F3/0611G06F3/0619G06F3/0643G06F3/067
Inventor FUJII, TETSUHIKOMUROTANI, AKIRA
Owner HITACHI LTD
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