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Dell EMC PowerVault MD 34XX/38XX Series Storage Arrays Administrator's Guide

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Changing snapshot rollback priority

You can set the priority for a rollback operation. Higher priority allocates more system resources for the rollback operation and might affect the overall system performance.

You can change the rollback priority at any of these times:
  • Before the rollback begins
  • While the rollback operation has a status of In Progress
There are five priority rates available: lowest, low, medium, high, and highest.
  • If the priority is set at the lowest rate, I/O activity is prioritized and the rollback operation takes longer time to complete.
  • If the priority is set at the highest priority rate, the rollback operation is prioritized, but I/O activity for the storage array may be affected.
  1. From the AMW, select the Storage & Copy Services tab.
  2. Do one of the following:
    • Select a snapshot image of either a base virtual disk or of a consistency group’s member virtual disk and then select Copy Services > Snapshot Image > Rollback > Change Priority.
    • Select a consistency group of either a base virtual disk or of a consistency group’s member virtual disk and then select Copy Services > Consistency Group Snapshot Image > Rollback > Change Priority.
    The Change Rollback Priority window is displayed.
  3. In the rollback priority area, use the slider bar to set a priority for the rollback operation.
    If you are changing the priority for a consistency group snapshot image, the priority setting is applied to all member virtual disks in the selected consistency group.
  4. Click Change to apply your changes to the rollback priority.
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