VERITAS Volume Manager 3.5 Administrator's Guide (September 2004)

Administering Disks
Taking a Disk Offline
Chapter 2 99
Taking a Disk Offline
There are instances when you must take a disk offline. If a disk is
corrupted, you must disable the disk before removing it. You must also
disable a disk before moving the physical disk device to another location
to be connected to another system.
NOTE Taking a disk offline is only useful on systems that support hot-swap
removal and insertion of disks without needing to shut down and reboot
the system.
To take a disk offline, use the vxdiskadm command:
Step 1. Select menu item 10 (Disable (offline) a disk device) from the vxdiskadm
main menu.
Step 2. At the following prompt, enter the address of the disk you want to
disable:
Disable (offline) a disk device
Menu: VolumeManager/Disk/OfflineDisk
Use this menu operation to disable all access to a disk device by the Volume
Manager. This operation can be applied only to disks that are not currently in a
disk group. Use this operation if you intend to remove a disk from a system
without rebooting.
NOTE: Many systems do not support disks that can be removed from a system during
normal operation. On such systems, the offline operation is seldom useful. Select
a disk device to disable [<address>,list,q,?] c0t2d0
The vxdiskadm program disables the specified disk.
Step 3. At the following prompt, indicate whether you want to disable another
device (y) or return to the vxdiskadm main menu (n):
Disable another device? [y,n,q,?] (default: n)