HP Veritas Volume Manager 5.0 -UX 11i v3 manual Moving disk groups between systems

Creating and administering disk groups

Moving disk groups between systems

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You can also move a disk by using the vxdiskadm command. Select item 3 (Remove a disk) from the main menu, and then select item 1 (Add or

initialize a disk).

See “Moving objects between disk groups” on page 203 for an alternative and preferred method of moving disks between disk groups. This method preserves VxVM objects, such as volumes, that are configured on the disks.

Moving disk groups between systems

An important feature of disk groups is that they can be moved between systems. If all disks in a disk group are moved from one system to another, then the disk group can be used by the second system. You do not have to re-specify the configuration.

To move a disk group between systems

1On the first system, stop all volumes in the disk group, then deport (disable local access to) the disk group with the following command:

#vxdg deport diskgroup

2Move all the disks to the second system and perform the steps necessary (system-dependent) for the second system and VxVM to recognize the new disks.

This can require a reboot, in which case the vxconfigd daemon is restarted and recognizes the new disks. If you do not reboot, use the command vxdctl enable to restart the vxconfigd program so VxVM also recognizes the disks.

3Import (enable local access to) the disk group on the second system with this command:

#vxdg import diskgroup

Caution: All disks in the disk group must be moved to the other system. If they are not moved, the import fails.

4After the disk group is imported, start all volumes in the disk group with this command:

#vxrecover -g diskgroup -sb

You can also move disks from a system that has crashed. In this case, you cannot deport the disk group from the first system. When a disk group is created or imported on a system, that system writes a lock on all disks in the disk group.