Magnetic disk array data writing method

Abstract

Being with cooperated application of a first disk, a second disk, a third disk and a memory module, the method is executed at a write cycle including a first clock and a second clock. These disks are in use for storing a first checking up data, a second data and a second checking up data. The second data includes a third cut data and a fourth cut data. The first checking up data are stored in memory module. The method includes following steps: first, the fourth cut data of the second data are written to the second disk at first clock; next, reading out the third cut data of the second data stored in the first disk at first clock, then, writing the first checking up data into the third disk at first clock, and calculating out the second checking up data from the third cut data and the fourth cut data of the second data at the second clock; finally, storing the second checking up data to the memory module at second clock.

Description

technical field [0001] The invention relates to a data writing method, in particular to a disk array data writing method. Background technique [0002] Hard disks are one of the most commonly used storage devices since the advent of personal computers. However, in the entire computer system architecture, compared with the central processing unit (CPU) and random access memory (RAM), the access speed of the hard disk is one of the slowest key points in the computer. Moreover, due to the extensive use of servers and the demand for large-capacity, high-speed storage devices for professional audio-visuals, in order to speed up the overall data flow of the computer and improve processing performance, the Disk Array (RedundantArrays of Inexpensive Disks, RAID) system has recently become a popular choice for users. The best choice for storage devices. [0003] In addition to improving the processing performance of the system by dividing the data and storing them on different hard...

AI Technical Summary

Problems solved by technology

[0007] Although it is only three clocks, disk arrays are generally used in systems or servers that need to process a large amount of data. When writing large amounts of data, the time wasted cannot be underestimated.

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