Control facility for processing in-band control messages during data replication
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United States of America Patent
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Aug 17, 2004
Grant Date -
N/A
app pub date -
Feb 15, 2002
filing date -
Feb 15, 2002
priority date (Note) -
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Abstract
A control facility that allows a non-programmer to use and manipulate replicated data without disrupting replication of the data itself. The control facility can be used and customized for a variety of software applications and storage platforms to perform off-host processing of the replicated data. In response to a single user command during replication of data from a primary node to a secondary node, a control message is obtained from the primary node and a control command associated with the control message is automatically executed on the secondary node. A portion of the data is diverted from first storage at the secondary node to second storage in response to obtaining the control message, the portion of the data is copied to the first storage in response to completing the execution of the control command, and the data is automatically re-directed to the first storage in response to completing the copying.
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