Releasing differential data for ShadowImage pairs

Procedure

1. Delete all pairs using the V-VOL containing the differential data (pages) that needs to be released.

2. Set system option mode 755 to OFF, so that you can reclaim zero pages.

3. Restore the blocked pool.

4. Release pages in the V-VOL.

To release pages in Device Manager - Storage Navigator, use the Reclaim Zero Pages window. In CCI, use the raidcom modify ldev command. Releasing pages might take some time.