Disk drive array memory system using nonuniform disk drives

Details Disk drive array memory system using nonuniform disk drives Disk drive array memory system using nonuniform disk drives

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06

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G06F 11/16 (2006.01) G06F 3/06 (2006.01) G06F 5/06 (2006.01) G06F 11/20 (2006.01) G06F 12/16 (2006.01) G06F 13/10 (2006.01) G11B 20/18 (2006.01) G11C 29/00 (2006.01)

Patent

CA 2101848

2101848 9214208 PCTABS00014 The data storage subsystem (100) is implemented using an array of data storage elements (122-* to 125-*) which vary in data storage characteristics and/or data storage capacity. Control apparatus (101) automatically compensates for any nonuniformity among the data storage elements (122-* to 125-*) by selecting a set of physical characteristics that define a common data storage element format. The selected set of physical characteristics may not match any of the disk drives (122-1 to 122-n+m) but each disk drive (122-1 to 122-n+m) can emulate these selected characteristics. This capability enables the disk drives (122-* to 125-*) in the data storage subsystem (100) to be replaced by nonidentical disk drives in a nondisruptive manner to provide continuous data availability.

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