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

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Adding unassigned physical disks to a disk pool

Use the Add Physical Disks (Capacity) option to increase the free capacity of an existing disk pool by adding unassigned physical disks. After you add unassigned physical disks to a disk pool, the data in each virtual disk of the disk pool is redistributed to include the additional physical disks.

NOTE: Keep these guidelines in mind when you add physical disks to a disk pool:
  • The status of the disk pool must be Optimal before you can add unassigned physical disks.
  • You can add a maximum of 12 physical disks to an existing disk pool. However, the disk pool cannot contain more physical disks than the maximum limit for a storage array.
  • You can add only unassigned physical disks with an Optimal status to a disk pool.
  • The data in the virtual disks remains accessible during this operation.
To add unassigned physical disks a disk pool:
  1. In AMW, select the Storage & Copy Services tab.
  2. Select the disk pool.
  3. From the menu bar, select Storage > Disk Pool > Add Physical Disks (Capacity).
    The Add Physical Disks dialog is displayed. You can view information about:
    • The disk pool in the Disk Pool Information area.
    • The unassigned physical disks that can be added to the disk pool in the Select physical disks for addition area.
      NOTE: The RAID controller module firmware arranges the unassigned physical disk options with the best options listed at the top in the Select physical disks for addition area.
  4. Select one or more physical disks in the Select physical disks for addition area.
    The total free capacity that will be added to the disk pool is displayed in the Total usable capacity selected field.
  5. Click Add.
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