Disk array apparatus, error control method for the same apparatus, and control program for the same method
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
N/A
Issued Date -
Mar 28, 2002
app pub date -
Sep 20, 2001
filing date -
Sep 28, 2000
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
To provide a disk array apparatus, which possesses capability to deal with data read/write errorswithout delaying its essential operations and to avoid operations that allow normal disk devices to be set in a degeneration state. The disk array apparatus includes: a failed disk specifying and storage part which detects and stores which disk device is failed; a disconnection state manager which temporarily disconnects the failed disk device and manages the disk array apparatus in temporary degeneration operation; an instruction execution unit for allowing the normal disk devices to perform data read/write operations using redundancy with upper devices when receiving data read/write instructions during temporary degeneration operation; a retry part which performs retry for the failed disk device in parallel with performing data read/write operations with upper devices; and a turning off and resupplying power unit for turning off and then resupplying power to the failed disk device if normal completion is not achieved by retry.
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