HP StorageWorks 2000 Modular Smart Array Reference Guide (481599-003, August 2008)

78 HP StorageWorks 2000 Family Modular Smart Array reference guide • August 2008
Changing Virtual Disk Ownership
Each virtual disk is owned by one of the controllers. SMU balances the number of
virtual disks each controller owns.
In a dual-controller system, when a controller fails, the partner controller assumes
temporary ownership of the failed controller’s virtual disks and resources. If the
system uses a fault-tolerant cabling configuration, both controllers’ LUNs will be
accessible through the partner.
Typically, you should not need to change virtual disk ownership.
Caution – If you change the ownership of a virtual disk whose volumes are mapped
to hosts, the assigned LUNs become invalid and hosts lose access to the volumes.
After changing ownership, you must reassign the LUNs and, depending on the host
operating system, either rescan or restart to detect the LUN changes.
To change the owner of a virtual disk:
1. Select Manage > Virtual Disk Config > Vdisk Configuration > Change Vdisk
Owner.
For each virtual disk, the virtual disk panel shows a status icon; the name, RAID
level, size, number of disk drives, and number of volumes; and utility status, if any.
2. Select the virtual disk to change ownership of.
The Change Virtual Disk Owner panel shows the current owner.
3. Click Change Virtual Disk Owner To RAID Controller
X, where X is whichever
controller does not currently own the virtual disk.
4. FC and iSCSI only:
a. Assign new LUNs to the virtual disk’s volume mappings.
b. Either rescan or restart the storage system.