Disk writing method for disk arrays and disk writing device for disk arrays

Abstract

The embodiment of the invention provides a disk writing method for disk arrays and a disk writing device for the disk arrays. The method includes: acquiring a sequence, according to physical addresses of logic units, of the logic units in the same RAID (redundant array of independent disks) group of disk arrays; and writing the disk writing concurrence IOs (inputs / outputs) of the RAID groups to the logic units of the RAID groups according to the sequence of the physical addresses of the logic units, wherein each writing concurrence IO includes at least one dirty page of one logic unit to be written into the RAID group. The disk writing method for the disk arrays and the disk writing device for the disk arrays reduce the time which is consumed when a magnetic arm jitters back and forth in addressing through uniform scheduling of the logic units in a single RAID group and then writing the disks according to the sequence of the physical addresses and avoid the effects among different RAID groups through control of the RAID groups so that writing efficiency of the disk arrays is improved and throughput capacity of the disk arrays is increased.

Description

technical field [0001] The embodiment of the present invention relates to computer technology, in particular to a disk array brushing method and a disk array brushing device. Background technique [0002] With the rapid development of computer application technology, the resulting large amount of data has continuously increased requirements for storage space and performance. Since there are still a large number of mechanical operations in the current mainstream disk operation, there is a large gap between its performance and processor and memory. Applying cache memory (CACHE) technology to the storage field can not only hide the delay of the host, but also integrate data, and write the data to the disk in a disk-friendly way through CACHE, that is, by flashing the disk, so as to reach the storage system best throughput. [0003] After decades of research, the existing CACHE algorithm has become mature. However, the applications provided by computers are increasingly diver...

AI Technical Summary

Problems solved by technology

Discrete brushing and concurrent IO will cause the magnetic arm of the disk to jump back and forth for addressing. A lot of time is consumed in the magnetic arm addressing instead of data reading and writing, which has a great negative impact on the overall performance of the disk array. The throughput of the disk array lower

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