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SANtricity 11.7
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Change the reserved capacity settings for a consistency group member volume

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You can change the settings for a consistency group member volume to adjust the percentage point at which System Manager sends an alert notification when the reserved capacity for a member volume is nearing full and to change the policy to use when the reserved capacity reaches its maximum defined percentage.

About this task

Changing the reserved capacity settings for an individual member volume also changes the reserved capacity settings for all member volumes associated with a consistency group.

Steps

  1. Select Storage › Pools & Volume Groups.

  2. Click the Reserved Capacity tab.

  3. Select the consistency group member volume that you want to edit, and then click View/Edit Settings.

    The Member Volume Reserved Capacity Settings dialog box appears.

  4. Change the reserved capacity settings for the member volume as appropriate.

    Field details
    Setting Description

    Alert me when…​

    Use the spinner box to adjust the percentage point at which System Manager sends an alert notification when the reserved capacity for a member volume is nearing full.

    When the reserved capacity for the member volume exceeds the specified threshold, System Manager sends an alert, allowing you time to increase reserved capacity or to delete unnecessary objects.

    Note Changing the Alert setting for one member volume will change it for all member volumes that belong to the same consistency group.

    Policy for full reserved capacity

    You can choose one of the following policies:

    • Purge oldest snapshot image — System Manager automatically purges the oldest snapshot image in the consistency group, which releases the member's reserved capacity for reuse within the group.

    • Reject writes to base volume — When the reserved capacity reaches its maximum defined percentage, System Manager rejects any I/O write request to the base volume that triggered the reserved capacity access.

  5. Click Save to apply your changes.

Results

System Manager changes the reserved capacity settings for the member volume, as well as the reserved capacity settings for all member volumes in the consistency group.