Hewlett Packard Enterprise HPE XP7, User Manual, Page: 127 / 311

Reverse resynchronization
You can use the Reverse Copy (Secondary > Primary) method to restore pairs.
This method performs a full restoration of P-VOL data from the S-VOL.
Resynchronizing Fast Snap pairs
Resynchronizing pairs does the following:
• Updates the S-VOL so that it is again paired with the P-VOL.
• Frees up the P-VOL’s snapshot differential data for that P-VOL to reuse.
NOTE: If the amount of snapshot data in selected P-VOLs or the total number of pairs in selected
snapshot groups exceeds 37,768, an error message appears when attempting to perform pair tasks.
Prerequisites
You must have the Storage Administrator (Local Copy) role.
Procedure
1. In the Explorer pane, click Storage Systems , expand the storage system tree, expand Replication ,
and then click Local Replication .
2. In the Local Replication window, select a P-VOL in the FS Root Volumes tab or a snapshot group in
the Snapshot Groups tab.
3. Click Operate FS Pairs .
4. In the FS Pairs window, select the pair you want to resynchronize, and then click Resync Pairs .
5. For Resync Type , select Normal Copy (Primary > Secondary) for full forward resynchronization of
data from the P-VOL to the S-VOL.
6. Click Finish , and then confirm the settings.
7. Accept the default task name or enter a unique name.
You can enter up to 32 letters, numbers, and symbols, except the following:
\ / : , ; * ? " < > |
8. If you want to monitor the task after submitting it, select Go to tasks window for status .
9. Click Apply to submit the task.
The Fast Snap pair is resynchronized ("PAIR" status).
More information
Workflow for creating groups and storing snapshot data using RAID Manager on page 26
Splitting Fast Snap pairs to store snapshot data on page 120
Resync Pairs wizard on page 274
Assigning MU numbers to deleted snapshot data
Resynchronizing Fast Snap pairs 127