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.
To take a disk offline
Select Disable (offline) a disk device from the vxdiskadm main menu.
At the following prompt, enter the address of the disk you want to disable:
Select a disk device to disable [<address>,list,q,?] c0t2d0s2
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)