Substitution of a target volume of a secondary storage controller for a source volume of a primary storage controller for executing a write operation
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United States of America Patent
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Aug 23, 2016
Grant Date -
Mar 17, 2016
app pub date -
Nov 24, 2015
filing date -
Dec 10, 2010
priority date (Note) -
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Abstract
A secondary storage controller receives metadata that uniquely identifies a source volume of a primary storage controller. Data stored in the source volume of the primary storage controller is synchronously copied to a target volume of the secondary storage controller. The secondary storage controller receives a command from a primary host to write selected data to the source volume. In response to receiving the command at the secondary storage controller, the selected data is written to the target volume of the secondary storage controller.
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