DISK WRITING METHOD FOR DISK ARRAYS AND DISK WRITING DEVICE FOR DISK ARRAYS

摘要

Provided are a disk writing method for disk arrays and a disk writing device for the disk arrays. The method comprises: acquiring a sequence, according to the physical addresses of all logic units, of the logic units in the same redundant array of independent disks (RAID) group of disk arrays; and sequentially writing disk writing concurrence inputs/outputs (IOs) of RAID groups to the logic units of the RAID groups according to the sequence of the physical addresses of the logic units, wherein each disk writing concurrence IO includes at least one dirty page of one logic unit to be written into an RAID group. By means of uniformly scheduling logic units in a single RAID group and performing disk writing according to a sequence of physical addresses, the disk writing method for disk arrays and the disk writing device for disk arrays provided in the embodiments of the present invention reduce the time which is consumed when a magnetic arm jitters back and forth in addressing and avoid the influences among different RAID groups via independent control to the RAID groups, thereby improving the disk writing efficiency of the disk arrays, and increasing the throughput capacity of the disk arrays.