System and method for improved error response in data mirroring
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United States of America Patent
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Feb 2, 2016
Grant Date -
Jul 10, 2014
app pub date -
Jan 8, 2013
filing date -
Jan 8, 2013
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Abstract
Systems and methods are provided to improve performance in backup data storage systems by improving response to errors. The system and method provide for transferring data from a primary storage controller to a secondary storage controller, where the secondary storage controller is linked to the primary storage controller by a plurality of links. The system and method includes transmitting a first transaction from the primary storage controller to the secondary storage controller using a first of a plurality of links. Then, in response to the first transaction crossing a first timeout boundary without completing, the system and method includes transmitting a second transaction from the primary storage controller to the secondary storage controller using a second of the plurality of links, the second of the plurality of links preferentially selected to be on a different network failure boundary from the first of the plurality of links.
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