Patent ID: 9170743
Filing Date: 2015-10-27
Classification: G06F

Abstract:
1. A system comprising: a plurality of storage systems including a primary storage system and a secondary storage system; wherein the primary storage system includes a primary volume having a primary local identifier; wherein the secondary storage system includes a secondary volume having a secondary local identifier which is different from the primary local identifier; wherein the primary storage system includes a primary storage controller operable, upon receiving a request to create a copy pair between the primary storage system and the secondary storage system, to confirm whether the copy pair can be created and, if yes, send the request to the secondary storage system; wherein the secondary storage system includes a secondary storage controller operable, upon receiving the request to create the copy pair between the primary storage system and the secondary storage system, to confirm whether the copy pair can be created and, if yes, to update a secondary storage pair information correlating the primary local identifier of the primary volume and the secondary local identifier of the secondary volume as the copy pair; and wherein the primary volume and the secondary volume have a same global identifier.