Design on RAID Based on Block I/O
Liu Li · Computer Technology and Development · 2008
RAID is an important technology which provides high availability and high reliability storage system.It can provide data reconstruction and restoration by software and hardware redundancy or parity.In this paper,according to the question of the designing of RAID system faced,the solution presented a RAID design which is based on block I/O.It helps to distinguish all kinds of requests and to analyze all kinds of parameters by inserting into the dev handler of SCSI target level and will be able to achieve a seamless IP-SAN Links.Through direct block I/O,it can reduce a memory copy.From the results,shows that the design can decrease data transfers delay and farthest improve data throughout in the process of transfer.This also can avoid repetitious costly memory copy operation.