Veritas Volume Manager 5.1 SP1 Administrator"s Guide (5900-1506, April 2011)

# /etc/vx/bin/vxmirror -g diskgroup -a

To configure VxVM to create mirrored volumes by default, use the following

command:

# vxmirror -d yes

If you make this change, you can still make unmirrored volumes by specifying

nmirror=1 as an attribute to the vxassist command. For example, to create an

unmirrored 20-gigabyte volume named nomirror in the disk group mydg, use the

following command:

# vxassist -g mydg make nomirror 20g nmirror=1

Mirroring volumes on a VM disk

Mirroring volumes creates one or more copies of your volumes on another disk.

By creating mirror copies of your volumes, you protect your volumes against loss

of data if a disk fails.

Note: This task only mirrors concatenated volumes. Volumes that are already

mirrored or that contain subdisks that reside on multiple disks are ignored

To mirror volumes on a disk

Make sure that the target disk has an equal or greater amount of space as the

source disk.

From the vxdiskadm main menu, select Mirror volumes on a disk .

At the prompt, enter the disk name of the disk that you wish to mirror:

Enter disk name [<disk>,list,q,?] mydg02

At the prompt, enter the target disk name (this disk must be the same size or

larger than the originating disk):

Enter destination disk [<disk>,list,q,?] (default: any) mydg01

Administering volumes

Adding a mirror to a volume

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