Disk drive array memory system using nonuniform disk drives
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United States of America Patent
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Jul 4, 1995
Issued Date -
N/A
app pub date -
Aug 31, 1994
filing date -
Feb 6, 1991
priority date (Note) -
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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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