Synchronous extent migration protocol for paired storage

摘要

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.

主权项

1. 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 such that the primary and secondary storage entities conduct the extent migration at approximately a same time;
wherein 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.