preferred RAID controller module owner

The  of an  pair that is designated to own these . The preferred RAID controller module owner is the RAID controller module that currently owns the virtual disk or .

If the preferred RAID controller module is being replaced or undergoing a  download, ownership of the virtual disks is automatically shifted to the other RAID controller module, and that RAID controller module becomes the current owner of the virtual disks. This is considered a routine ownership change and is reported with an informational entry in the .

There can also be a forced failover from the preferred RAID controller module to the other RAID controller module because of I/O path errors. This is reported with a critical entry in the event log, and will be reported by the Enterprise Management software to e-mail and SNMP alert destinations.

The preferred owner for a virtual disk is initially selected by the RAID controller module when the virtual disk is created. Use the Disk Group >> Change >> Ownership/Preferred Path pull-down menu option to change the preferred RAID controller module ownership for a selected disk group. To change the preferred RAID controller module ownership for a virtual disk, use the Virtual Disk >> Change >> Ownership/Preferred Path pull-down menu option.

Important: A  in a  does not have a preferred owner. Instead, the ownership of the Secondary Virtual Disk is determined by the  of the associated . For example, if RAID Controller Module A owns the Primary Virtual Disk in the primary , then RAID Controller Module A owns the associated Secondary Virtual Disk in the secondary storage array. RAID Controller Module ownership changes of the Primary Virtual Disk cause a corresponding RAID controller module ownership change of the Secondary Virtual Disk.

To shift virtual disks away from their current owners and back to their preferred owners, use the Advanced >> Recovery >> Redistribute Virtual Disks option.