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

1994-08-31

1995-07-04

Bowler, Alyssa H.

Excavating

395575, 395500, 371 101, 364DIG1, 3642362, G06F 300

Patent

active

054308550

ABSTRACT:
The data storage subsystem is implemented using an array of data storage elements which vary in data storage characteristics and/or data storage capacity. Control apparatus automatically compensates for any nonuniformity among the data storage elements 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 but each disk drive can emulate these selected characteristics. This capability enables the disk drives in the data storage subsystem to be replaced by nonidentical disk drives in a nondisruptive manner to provide continuous data availability.

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"Some Design Issues of Disk Array" Ng, 1989, IEEE pp. 137-142.

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