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Storage control device having restoration function to initial condition storage device, and control method thereof

一种存储设备、存储控制的技术，应用在存储技术和记录技术领域，能够解决高速处理的考虑不充分等问题

Inactive Publication Date: 2007-03-07
FUJITSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, consideration for high-speed processing is not sufficient

Method used

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  • Storage control device having restoration function to initial condition storage device, and control method thereof
  • Storage control device having restoration function to initial condition storage device, and control method thereof
  • Storage control device having restoration function to initial condition storage device, and control method thereof

Examples

Experimental program
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Effect test

no. 1 example

[0048] The information device of the first embodiment of the present invention will be described below with reference to FIG. 2 to FIG. 10 .

[0049]

[0050] An information device is an information device with a fixed disk device. The fixed disk device stores an operating system (hereinafter referred to as OS), various application programs, and initial data set at the factory.

[0051] In a conventional information device, original data is previously copied to a predetermined area in many cases, and when storing original initial data, a conventional information device is used. In this way, by copying the stored initial data again, the information device can be restored to the original state when it leaves the factory.

[0052] FIG. 3 is an example of a data storage format of a fixed disk device having a conventional initial state restoration function as described above. The storage state 300 of the fixed disk at the factory is shown on the left side of FIG. 3 . At the ti...

Embodiment 1

[0079] FIG. 8 illustrates another example of a data storage format of a fixed disk device with an original state restoration function. Compared with the configuration of the storage areas of FIG. 5 , in FIG. 8 , initial data storage areas and update data storage areas are alternately arranged in adjacent tracks.

[0080] That is, in the initial state 500 at the time of shipment (on the left side of FIG. 8 ), among the tracks with track numbers 1 to 2n, odd-numbered tracks are not used, and initial data is stored in even-numbered tracks.

[0081] Also, for example, when the original data in Track 2 is changed, the data after the change is stored in Track 1 instead of Track 2 . Generally, when the original data in the track 2m is changed, the changed data is stored in the track 2m-1 instead of the track 2m.

[0082] Under this data configuration, if a read request for the track 2m-1 occurs, the data in the track 2m-1 and the track 2m are continuously read to the read buffer (no...

Embodiment 2

[0085] FIG. 9 illustrates another example of a data storage format of a fixed disk device with an original state restoration function. In the example shown in FIG. 5, the initial data storage area 402 and the update data storage area 403 are equal in size. Thus, in the example shown in FIG. 5, the area of ​​the fixed disk is occupied by a designated area 401, an initial data storage area 402, and an update data storage area 403 for storing data in which initial data is changed. In this way, no area is left that the user can use.

[0086] However, in general, the size of the initial data generally only occupies a part of the entire storage area. For example, for the number n of tracks in the updated data storage area and the number m of tracks in the initial data storage area, a relationship m<

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Abstract

A storage control device for controlling a storage device including an initial data storage area for storing initial data, an updated data storage area for storing updated data corresponding to the initial data, and a designation area for designating either the initial data storage area or the updated data storage area to be read out. The storage control device comprises a write unit which writes data in the updated data storage area, a re-write unit which re-writes the designation area in which information for reading the initial data storage area is set in the initial stage into the setting of reading the updated data storage area when writing into the updated data storage area occurs, an initializing unit for re-writing the information in the designation area to the setting of reading of the initial data, a selection unit for selecting to read either the initial data storage area or the updated data storage area when reading the data, and a reading unit for reading the updated data storage area or the initial data storage area according to the selection of the selection unit.

Description

technical field [0001] The present invention relates to storage technology and recording technology in computers and the like. Background technique [0002] The present invention is applied to an information device such as a personal computer having a storage device such as a fixed magnetic disk device, a nonvolatile semiconductor storage device, and the like. Information equipment is sold with computer programs, such as operating systems, application software, etc., which are pre-recorded in storage devices. These information devices need to have the function of returning to the initial state when leaving the factory, for example, because troubles are encountered during use. [0003] FIG. 1 illustrates a storage structure of a storage device, such as a fixed disk device, etc., which information equipment such as a personal computer has. When the storage device of the information device is sold, a computer program, such as an operating system, application software, etc., i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F12/00G06F3/06
CPCG06F3/064G06F3/0635G06F11/0727G06F11/1417G06F3/0674G06F11/0793G06F3/0634
Inventor 大山孝志佐佐木昭彦村上孝一越沼贵哉河原正范
Owner FUJITSU LTD
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