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

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Changing the RAID controller module ownership of a disk pool

You can change the RAID controller module ownership of a disk pool to specify which RAID controller module must own all of the virtual disks in the disk pool.

Changing the RAID controller module ownership at the disk pool level causes each virtual disk in that disk pool to transfer to the other RAID controller module and use a new I/O path. If you do not want to set each virtual disk to the new path, change the RAID controller module ownership at the virtual disk level instead of the disk pool level.
CAUTION: Possible loss of data access – If you change the RAID controller module ownership while an application is accessing the virtual disks in the disk pool, it may result in I/O errors. Make sure that the application is not accessing the virtual disks, and there is a multi-path driver installed on the hosts before you perform this procedure.
To RAID controller module ownership of 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 > Change > Ownership/Preferred Path.
  4. Select the RAID controller module.
  5. Click Yes.
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