Dell POWERVAULT MD3600I - Manual (Page 87)

To change the ownership of the virtual disk to the connected controller:
1. In the AMW, select the Storage & Copy Services tab and select a virtual disk.
2. From the menu bar, select the appropriate RAID controller module slot in Storage → Virtual Disk → Change →
Ownership/Preferred Path.
3. Click Yes to confirm the selection.
Removing Host-To-Virtual Disk Mapping
To remove the host to virtual disk mapping:
1. In the AMW, select the Host Mappings tab.
2. Select a virtual disk under Defined Mappings.
3. Perform one of these actions:
– From the menu bar, select Host Mappings → LUN Mapping → Remove.
– Right-click the virtual disk, and select Remove from the pop-up menu.
4. Click Yes to remove the mapping.
Changing The RAID Controller Module Ownership Of A Disk Group
You can change the RAID controller module ownership of a disk group. You can also change the RAID controller module
ownership of a standard virtual disk or a snapshot repository virtual disk. You cannot directly change the RAID controller
module ownership of a snapshot virtual disk because the snapshot virtual disk inherits the RAID controller module
owner of its associated source virtual disk. Changing the RAID controller module ownership of a virtual disk changes the
preferred RAID controller module ownership of the virtual disk.
During a virtual disk copy, the same RAID controller module must own both the source virtual disk and the target virtual
disk. Sometimes both virtual disks do not have the same preferred RAID controller module when the virtual disk copy
starts. Therefore, the ownership of the target virtual disk is automatically transferred to the preferred RAID controller
module of the source virtual disk. When the virtual disk copy is completed or is stopped, ownership of the target virtual
disk is restored to its preferred RAID controller module. If ownership of the source virtual disk is changed during the
virtual disk copy, ownership of the target virtual disk is also changed. Under certain operating system environments, it
may be necessary to reconfigure the multi-path driver before an I/O path can be used.
To change the RAID controller module ownership of a disk group:
1. In the AMW, select the Storage & Copy Services tab and select a disk group.
2. From the menu bar, select Storage → Disk Group → Change → Ownership/Preferred Path.
3. Select the appropriate RAID controller module slot and click Yes to confirm the selection.
CAUTION: Possible loss of data access—Changing ownership at the disk group level causes every virtual disk
in that disk group to transfer to the other RAID controller module and use the new I/O path. If you do not want
to set every virtual disk to the new path, change ownership at the virtual disk level instead.
The ownership of the disk group is changed. I/O to the disk group is now directed through this I/O path.
NOTE: The disk group may not use the new I/O path until the multi-path driver reconfigures and recognizes the
new path. This action usually takes less than 5 minutes.
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