Asymmetrical load balancing for mirrored storage volumes
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United States of America Patent
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Jan 9, 2007
Grant Date -
Feb 19, 2004
app pub date -
Aug 11, 2003
filing date -
Aug 19, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A network storage system includes a network storage system controller/virtualizer which includes at least one transaction processor. When a host access request is received by the network storage system controller/virtualizer, the transaction processor calculates one or more cost functions. In one exemplary embodiment, a cost function associated with storage system volume load and a cost function associated with communication path load are calculated. The cost function result(s) are utilized by the storage system controller/virtualizer to form a request for servicing the host access request while balancing the load of the network storage system.
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