Release Notes

8 Dell PS Series: Space Borrowing for Snapshots and Replicas | TR1084 | version 2
5. Expand Volumes, right-click the volume and select Modify snapshot policy.
6. Select a snapshot space recovery option and click OK.
7. To enable space borrowing for snapshots, check Borrow snapshot space as needed.
For additional information on snapshots, refer to the following documents.
• Dell EqualLogic Group Manager Administrator’s Manual on eqlsupport.dell.com (login required)
• Dell PS Series Snapshots and Clones: Best Practices and Sizing Guidelines
1.2 Asynchronous replication
Replicas are also space-efficient, point-in-time copies of a volume that can be used to protect and recover data.
However, while snapshots of a volume reside in the same pool and PS Series group as the base volume, replicas of a
volume reside in a pool of a secondary PS Series group. Volume replication between two PS Series groups provides
protection against data loss. If a volume is destroyed in a primary PS Series group, you can fail over and recover the
data from a replica in a Secondary PS Series group. This is commonly used to provide business continuity in disaster
recovery situations such as regional disasters and testing scenarios.