SYSTEMS AND METHODS FOR INTELLIGENT DISK REBUILD AND LOGICAL GROUPING OF SAN STORAGE ZONES
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United States of America Patent
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Issued Date -
Jan 8, 2009
app pub date -
Jul 3, 2008
filing date -
Jul 3, 2007
priority date (Note) -
Abandoned
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Abstract
A method of rebuilding a replacement drive used in a RAID group of drives is disclosed. The rebuilding method includes tracking data modification operations continuously during use of the drives. The method also includes saving the tracked data modifications to a log in a persistent storage, where the tracked data modifications are associated with stripe data present on the drives. Then, rebuilding a failed one of the drives with a replacement drive. The rebuilding is facilitated by referencing the log from the persistent storage, and the log facilitating reading only portions of stripe data from surviving drives and omitting reading of portions from the drives where no data was written. Thus, the rebuilding only rebuilds the stripe data to the replacement drive. Also provided is a zoning method, which enables logical zone creation from storage area networks.
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