Dell MD3200i, MD3220i Changing the RAID Controller Module Ownership of a Virtual Disk or a Disk Group

Configuration: Disk Groups and Virtual Disks 133

• You cannot move a host with a restricted host type into a storage partition

that already has LUNs mapped that are greater than what is allowed by the

restricted host type. For example, if you have a restricted host type that

allows only LUNs up to 31, you cannot move that restricted host type into

a storage partition that has LUNs greater than 31 already mapped.

The Default Group on the Mappings tab has a default host type. You can

change this type by selecting Storage Array Change Default Host Type.

If you set the default host type to a host type that is restricted, the maximum

number of LUNs that are allowed in the Default Group for any host are

restricted to the limit imposed by the restricted host type. If a particular host

with a non-restricted host type becomes part of a specific storage partition,

you are able to change the mapping to a higher LUN.

Changing the RAID Controller Module Ownership of a Virtual Disk or a

You can change the RAID controller module ownership of a virtual disk or a

disk group.

You can 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 might be necessary to reconfigure the

multi-path driver before an I/O path can be used.

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