Patent ID: 7216199
Filing Date: 2007-05-08
Classification: G06F

Abstract:
1. A disk control system that responds to a write request from an upper file system to translate logical addresses into physical addresses and then continuously writes write-requested data to a data stripe functioning as a write area composed of a plurality of disk apparatuses, the system comprising: means for, in response to said write request, continuously writing write-requested data to the data stripe as data corresponding to physical addresses, even if the write request corresponds to discontinuous logical addresses; means, in response to said write request, for sequentially writing data blocks on empty areas of an assigned target data stripe of data areas provided on said plurality of disks, in such a manner that at least one data block is written at a time; means, in response to said write request, for writing said logical addresses from said upper file system on data managing areas provided on the plurality of disks, as logical-address log information; and means for notifying, in response to the write request from said upper file system, the upper file system that the write has been completed, after said data and said logical-address log information have been completely written.