Method and apparatus for the takeover of primary volume in multiple volume mirroring
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United States of America Patent
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Oct 26, 2004
Grant Date -
N/A
app pub date -
Oct 12, 2000
filing date -
Oct 12, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A multiple disk system comprises plural physical drives organized as plural groups of disks. Each group is accessed as a plurality of logical volumes. One of the logical drives is considered a primary volume and one or more other logical volumes are considered as secondary volumes, which together constitute a mirroring group. Data contained in a memory records such organization. The data is consulted to select a secondary volume when the disk group containing a primary volume fails.
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