DETERMINING MODIFIED DATA IN CACHE FOR USE DURING A RECOVERY OPERATION
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United States of America Patent
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Issued Date -
Jul 8, 2010
app pub date -
Jan 6, 2009
filing date -
Jan 6, 2009
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Abstract
Provided are a method, system, and article of manufacture for determining modified data in cache for use during a recovery operation. An event is detected during which processing of writes to a storage device is suspended. A cache including modified data not destaged to the storage device is scanned to determine the data units having modified data in response to detecting the event. The data units having the modified data is indicated in a backup storage. The indication of the data units having the modified data in the backup storage is used during a recovery operation.
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