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SANtricity 11.8

Change synchronization settings for a mirrored pair

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You can change the synchronization priority and resynchronization policy that the mirrored pair uses to complete the resynchronization operation after a communication interruption.

About this task

You can edit the synchronization settings for a mirrored pair only on the storage array that contains the primary volume.

Steps

  1. Select Storage › Synchronous Mirroring.

  2. Select the mirrored pair that you want to edit, and then select More › Edit settings.

    The system displays the View/Edit Settings dialog box.

  3. Use the slider bar to edit the synchronization priority.

    The synchronization priority determines how much of the system resources are used to complete the resynchronization operation after a communication interruption as compared to service I/O requests.

    More about synchronization rates

    There are five synchronization priority rates:

    • Lowest

    • Low

    • Medium

    • High

    • Highest

    If the synchronization priority is set to the lowest rate, I/O activity is prioritized, and the resynchronization operation takes longer. If the synchronization priority is set to the highest rate, the resynchronization operation is prioritized, but I/O activity for the storage array might be affected.

  4. Edit the resynchronization policy as appropriate.

    You can resynchronize the mirrored pairs on the remote storage array either manually or automatically.

    • Manual (the recommended option) — Select this option to require synchronization to be manually resumed after communication is restored to a mirrored pair. This option provides the best opportunity for recovering data.

    • Automatic — Select this option to start resynchronization automatically after communication is restored to a mirrored pair.

  5. Select Save.