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SANtricity 11.8

Change role between volumes in a mirrored pair

Contributors netapp-jolieg
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You can perform a role reversal between the two volumes in a mirrored pair that are participating in synchronous mirroring. This task might be necessary for administrative purposes or in the event of a disaster on the local storage array.

About this task

You can either demote the primary volume to the secondary role or promote the secondary volume to the primary role. Any hosts that are accessing the primary volume have read/write access to the volume. When the primary volume becomes a secondary volume, only remote writes initiated by the primary controller are written to the volume.

Steps

  1. Select Storage › Synchronous Mirroring.

  2. Select the mirrored pair that contains the volumes for which you want to change the role, and then select More › Change Role.

    The system displays a confirmation.

  3. Confirm that you want to change the role of the volumes, and then select Change Role.

    Note

    If the local storage array cannot communicate with the remote storage array, the system displays the Cannot Contact Storage Array dialog box when a role change is requested, but the remote storage array cannot be contacted. Click Yes to force the role change.
Results

System Manager performs the following action:

  • If the associated volume in the mirrored pair can be contacted, the roles between the volumes change. System Manager promotes the secondary volume in the mirrored pair to the primary role or demotes the primary volume in the mirrored pair to the secondary role (depending on your selection).