Data storage system recovery from disk failure during system...

Details Data storage system recovery from disk failure during system... Data storage system recovery from disk failure during system...

2007-01-30

2007-01-30

Bataille, Pierre (Department: 2186)

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

C711S162000

Reexamination Certificate

active

10817302

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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