Resynchronizing a mirror

When you resynchronize a mirror, all the pairs with the mirror ID are resynchronized and update data copy to the S-VOL is resumed.

When you use UR with TC and a mirror to which the delta resync pair belongs is resynchronized, the delta resync operation is performed. When you use UR with GAD, resynchronizing the mirror is not necessary for performing delta resync.

Before you begin

  • This operation is performed from the primary storage system only.
  • Mirror status must be Stopped, Hold, Holding, or Hold(Failure).
  • Device Manager - Storage Navigator does not support multiple primary and secondary storage systems in a UR system. In this case, use RAID Manager to restore a mirror.

    In RAID Manager, execute the pairresync command by specifying a group.

  • Use RAID Manager to restore a mirror that is in a RAID Manager consistency group containing multiple journals.
  • Resynchronizing a mirror when I/O load is low reduces impact on performance.
  • If performing the delta resync operation, make sure to review Performing the delta resync operationthe prerequisites for performing the delta resync operation in the Universal Replicator User Guide.

Procedure

  1. In the Explorer pane, expand the Storage Systems tree.

  2. Expand the target storage system tree, expand Replication, and click Remote Replication.

  3. On the Mirrors tab, select the mirrors to be resynchronized, delta resynchronized, or changed from Hold(Failure) to Hold status, and then click Resync Mirrors.

  4. In the Resync Mirrors window, review the mirrors in the Selected Mirrors table. You can remove a mirror from the table by selecting it and clicking Cancel.

  5. Click Finish.

  6. In the Confirm window, review the settings, enter a task name, and then click Apply.

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