08677063 is referenced by 2 patents and cites 7 patents.

This disclosure relates to parity declustered storage device arrays having partition groups. In an exemplary embodiment, the storage system includes a storage device array, such as disk array. Each storage device is divided into partitions. Each partition includes stripe units, such as hundreds or thousands of stripe units in exemplary embodiments. The storage system also includes a physical array controller coupled to the storage device array. In an exemplary embodiment, the array controller includes a partition group lookup table and stores and retrieves data and parity in the storage devices based on the partition group lookup table. In this exemplary embodiment, the array controller also includes a stripe lookup table and/or a log. In an exemplary embodiment, the partition group lookup table and the stripe lookup table take up less memory (e.g., by an order of magnitude) than a single-level stripe map conveying the same information.

Title
Parity declustered storage device array with partition groups
Application Number
12/847798
Publication Number
8677063 (B2)
Application Date
July 30, 2010
Publication Date
March 18, 2014
Inventor
James Christopher Wyllie
San Jose
CA, US
D Scott Guthridge
San Jose
CA, US
Veera Deenadhayalan
San Jose
CA, US
Ralph A Becker Szendy
San Jose
CA, US
Agent
Cantor Colburn
Assignee
International Business Machines Corporation
NY, US
IPC
G06F 12/00
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