System and method for controlling the updating of storage device
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United States of America Patent
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May 18, 2010
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N/A
app pub date -
Sep 20, 2007
filing date -
Oct 19, 2004
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Abstract
Arrangements for controlling the updating of a storage device, which investigates the number of times that a lock waiting time exceeds an upper limit value to judge whether or not the number of times that the upper limit value has been exceeded exceeds a frequency threshold value; stops the reception of write requests by the file system if the result of this judgment is affirmative; and stops the copy-on-write by cutting off the logical connection between the primary storage device and the secondary storage device.
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