Resiliency with a destination volume in a replication environment

摘要

A method to provide resiliency with a destination volume in a replication environment is disclosed. Data from a source volume, such as a primary volume or a secondary volume in a replication relationship, is migrated to the destination volume. A snapshot representing data on a source volume is generated. The replication relationship between the source volumes is broken, and a new relationship between a source volume and the destination volume is established. A delta of data between the snapshot and one of the volumes in the new relationship is generated. The delta is sent to the other of the volumes in the new relationship.

主权项

1. A method of providing resiliency with a destination volume of a plurality of volumes in a replication environment, the plurality of volumes further having a plurality of source volumes, the plurality of source volumes including a primary volume and at least one secondary volume which are in a replication relationship with each other, the method comprising:
migrating data from the primary volume to the destination volume; upon completion of the migration of data from the primary volume to the destination volume, generating a snapshot of the destination volume representing data on the source volumes at completion of the migration; breaking the relationship between the primary volume and the at least one secondary volume after generating the snapshot whereupon sending of data to the primary volume is ceased and the destination volume is established as a new primary volume; establishing a new replication relationship between the at least one secondary volume and the new primary volume; upon establishment of the replication relationship between the new primary volume and the at least one secondary volume, generating a delta of data between the snapshot and the new primary volume; and sending the delta of data to the at least one secondary volume.