VERITAS Volume Manager 4.1 Administrator's Guide

Administering Disks
Removing and Replacing Disks
Chapter 2 97
Removing and Replacing Disks
NOTE A replacement disk should have the same disk geometry as the disk that failed.
That is, the replacement disk should have the same bytes per sector, sectors per
track, tracks per cylinder and sectors per cylinder, same number of cylinders,
and the same number of accessible cylinders.
If failures are starting to occur on a disk, but the disk has not yet failed completely, you can
replace the disk. This involves detaching the failed or failing disk from its disk group, followed
by replacing the failed or failing disk with a new one. Replacing the disk can be postponed
until a later date if necessary.
To replace a disk, use the following procedure:
Step 1. Select menu item 3 (Remove a disk for replacement) from the vxdiskadm main
menu.
Step 2. At the following prompt, enter the name of the disk to be replaced (or enter list for a
list of disks):
Remove a disk for replacement
Menu: VolumeManager/Disk/RemoveForReplace
Use this menu operation to remove a physical disk from a disk group, while
retaining the disk name. This changes the state for the disk name to a removed
disk. If there are any initialized disks that are not part of a disk group, you
will begiven the option of using one of these disks as a replacement.
Enter disk name [<disk>,list,q,?] mydg02
Step 3. When you select a disk to remove for replacement, all volumes that are affected by
the operation are displayed, for example:
VxVM NOTICE V-5-2-371 The following volumes will lose mirrors as a result of this
operation:
home src
No data on these volumes will be lost.
The following volumes are in use, and will be disabled as a result of this
operation:
mkting