Synchronous extent migration protocol for paired storage
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United States of America Patent
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Dec 13, 2016
Grant Date -
Oct 6, 2016
app pub date -
Jun 7, 2016
filing date -
Dec 16, 2010
priority date (Note) -
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Abstract
Extent migration is provided in a data storage environment configured for synchronous replication between a primary and secondary pair of storage entities, each having tiered storage devices. In one embodiment, by way of example only, a migration instruction is sent, by the primary storage entity, to the secondary storage entity, the migration instruction including a time delta approximately equal to a time of an intended migration at the primary storage entity such that the primary and secondary storage entities conduct the extent migration at approximately a same time. A relative priority is used against a secondary ordered heat map of the tiered storage devices of the secondary storage entity to perform the extent migration, regardless of whether the primary and secondary storage entities are identical.
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