Title:Â Method and apparatus for dynamic performance evaluation of data storage systems
Patent application publication number: Â 20070028135
Publication date: February 1, 2007
Filing date:Â October 2, 2006 (priority to November 22, 2002)
AIPW Summary:Â A method for dynamic performance evaluation of data storage systems (either a single disk drive or a RAID) using data throughput as a diagnostic criteria. The performance of the drive is compared to predetermined minimum performance criteria. The drive is considered to be “acceptable” if the measured performance meets the minimum performance criteria. To measure drive performance, a predetermined number of blocks are transferred. The transfer time is measured, and this process is repeated several times to obtain an average transfer time. If the average transfer time is less than a predefined time limit, then the drive is “accepted” (assuming that there have been no hard errors, in which case the drive is rejected).