Data storage system recovery from disk failure during system off-line condition
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United States of America Patent
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Jan 30, 2007
Grant Date -
Oct 13, 2005
app pub date -
Apr 2, 2004
filing date -
Apr 2, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
A method for returning a logical volume which is part of a redundant data storage system to on-line status following a disk failure within the logical volume during the time when another of that volume's disks is unavailable as a result of having its firmware updated, as an example. Data which would otherwise be changed in the logical volume due to host write requests is directed to a logging facility within the data storage system, but outside of the logical volume undergoing upgrade.
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