公开(公告)号：GB2500353A

公开(公告)日：2013-09-18

申请号：GB201312055

申请日：2011-12-02

Applicant: IBM

Inventor： SORENSON TODD CHARLES ,  JENAS PAUL ANTHONY II ,  MONTGOMERY DAVID ,  JUAREZ LARRY

IPC: G06F3/06 ,  G06F11/20

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, a migration instruction is sent, by the primary storage entity, to the secondary storage entity, the migration instruction including a relative priority based on a primary ordered heat map of the tiered storage devices of the primary storage entity. The 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.