System and method for improving the performance of

专利名称：System and method for improving the

performance of operations requiring parityreads in a storage array system

发明人：Jeffrey R. Hartline,James Lee Hafner,Tapas

Kanungo

申请号：US12037480申请日：20080226公开号：US07529970B2公开日：20090505

专利附图：

摘要：A system for improving a performance of a write process in an exemplary RAID

system reduces a number of IOs required for a short write in a RAID algorithm by using areplicated-parity drive. Parity is stored on the parity portion of the disk drives. Areplicated-parity drive comprises all the parity information. Parity information for eachparity drive is co-located or mirrored on the replicated-parity portion of the disk drivesfor fast access during a read portion of the read-modify-write process. Consequently, thesystem accesses parity data with one seek, as opposed to P seeks in a conventional diskarray system utilizing P parity drives.

申请人：Jeffrey R. Hartline,James Lee Hafner,Tapas Kanungo

地址：Ithaca NY US,San Jose CA US,San Jose CA US

国籍：US,US,US

代理机构：Fleit Gibbons Gutman Bongini & Bianco P.L.

代理人：Samuel A. Kassatly,Jon A. Gibbons

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