Synchronous extent migration protocol for paired storage
AssigneeInternational Business Machines Corporation
InventorsPaul A. JENNAS, II, Larry JUAREZ, David MONTGOMERY, Todd C. SORENSON
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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 adjusted for a transmission time such that the primary and secondary storage entities conduct the extent migration at approximately a same time.
Claims6
In a data storage environment configured for synchronous replication between a primary and secondary pair of storage entities, each having tiered storage devices, a method for extent migration by a processor device, comprising:
- sending, by the primary storage entity, a migration instruction 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 adjusted for a transmission time such that the primary and secondary storage entities conduct the extent migration at approximately a same time.
Dependencies are inferred from the claim text.