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Method for removing synchronous process of cheap magnetic disc redundant array apparatus

A technology of synchronization process and equipment, applied in the fields of instruments, electrical digital data processing, memory systems, etc., can solve the problems caused by users of synchronization operation, reduce the overall efficiency of the system, long synchronization operation time, etc., to achieve a clear life cycle, eliminate Synchronization process, the effect of eliminating confusion

Inactive Publication Date: 2008-02-13
INVENTEC CORP
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Problems solved by technology

[0008] 1. The data generated by the synchronous operation is meaningless
[0009] 2. The synchronization operation takes a long time, and a large number of read and write operations required by the synchronization process are easy to damage the hard disk
[0010] 3. After the synchronization operation is interrupted, it must be restarted from the starting position of the RAID device data area
[0011] 4. Synchronous operation reduces the overall performance of the system
[0012] 5. Synchronous operation is easy to cause confusion to users

Method used

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  • Method for removing synchronous process of cheap magnetic disc redundant array apparatus
  • Method for removing synchronous process of cheap magnetic disc redundant array apparatus
  • Method for removing synchronous process of cheap magnetic disc redundant array apparatus

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Embodiment Construction

[0050] Regarding the features and implementation of the present invention, the preferred embodiments are described in detail below in conjunction with the drawings.

[0051] As shown in FIG. 3 , FIG. 3 is a block diagram of the data storage structure of the RAID device according to the present invention. As shown in the figure, the bitmap 320 is created in the RAID device 300 in a RAID-1 manner, that is, the bitmap 320 is located in each hard disk (hard disk 1, hard disk 2, hard disk 3, hard disk 4, and hard disk 5) of the RAID device 300 in a mirrored manner. ). Wherein, each bit of the bitmap 320 corresponds to each data block of the RAID device 300 . The size of the bitmap 320 is calculated by the following formula: size of the bitmap÷size of the RAID device=1÷(number of bytes of data blocks of the RAID device×8) (Formula 1). Assuming that the capacity of the RAID device 300 is 1T (ie, 1024×1024M), and the size of each data block is 64K, the size of the bitmap 320 is: 102...

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Abstract

The present invention discloses a raid (redundant arrays of inexpensive disks) equipment synchronization process eliminating method. First, a bit map is established which corresponds with several data blocks of the cheap raid equipment before initialization; when the cheap raid equipment is read or written in, corresponding operations is executed according to the value of the block which corresponds with the data block required by the reading and writing operations in the bit map. The present method eliminates the synchronization process when the cheap raid equipment is established. Thus the cheap raid equipment can function normally since establishment and a plurality of reading and writing operations during synchronization are eliminated, further enhancing the efficiency and protecting hardware of the cheap raid equipment. In addition, the life cycle of the equipment is clearer and puzzles about the synchronization of users are eliminated.

Description

technical field [0001] The invention relates to a disk management method, in particular to a method for eliminating the synchronization process of a RAID device. Background technique [0002] Redundant Arrays of Inexpensive Disks (RAID) devices combine N hard disks into a virtual single large-capacity hard disk through a RAID controller (which can be hardware or software) to provide greater storage capacity and faster access speed or data redundancy features. According to the different data organization methods, RAID devices can be divided into Linear (linear mode), disk array 0 (RAID-0), RAID-1, RAID-5, RAID-6, etc. Among them, RAID-1, RAID-5 and RAID-6, as well as RAID-10 and RAID-50 extended from them, all provide data redundancy functions. [0003] The data redundancy function means that by storing redundant data in a RAID device, when one or more hard disks in the RAID device are damaged, the complete data can still be obtained from the RAID device through a certain m...

Claims

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Application Information

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IPC IPC(8): G06F12/00G06F12/16G06F13/00G11B20/10
Inventor 李东海王建忠陈玄同刘文涵
Owner INVENTEC CORP
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