Storage control apparatus and control method thereof
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United States of America Patent
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Sep 2, 2008
Grant Date -
May 27, 2004
app pub date -
Nov 19, 2003
filing date -
Nov 22, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
A storage control apparatus controls physical disks according to the host access using a pair of controllers, while mirroring processing is decreased when data is written to a cache memory and high-speed operation is enabled. The mirror management table is created with allocating the mirror area of the cache memory of the other controller, and acquisition of a mirror page of the cache memory of the other controller is executed referring to the mirror management table without an exchange of mirror page acquisition messages between the controllers.
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