How to Enable a Component in a RAID 5 Volume

1. Make sure that you have a current backup of all data and that you have root access.

2. To enable a failed component in a RAID 5 volume, use one of the following methods:

   • From the Enhanced Storage tool within the Solaris Management Console, open the Volumes node, then open the RAID 5 volume. Choose the Components pane, then choose the failed component. Click Enable Component and follow the instructions. For more information, see the online help.

   • Use the following form of the metareplace command:

     metareplace -e volume-name component-name

     • -e specifies to replace the failed component with a component at the same location (perhaps after physically replacing a disk).

     • volume-name is the name of the volume with a failed component.

     • component-name specifies the name of the component to replace.

     metareplace automatically starts resynchronizing the new component with the rest of the RAID 5 volume.

Example—Enabling a Component in a RAID 5 Volume

# metareplace -e d20 c2t0d0s2

In this example, the RAID 5 volume d20 has a slice, c2t0d0s2, which had a soft error. The metareplace command with the -e option enables the slice.

If a disk drive is defective, you can either replace it with another available disk (and its slices) on the system as documented in How to Replace a Component in a RAID 5 Volume. Alternatively, you can repair/replace the disk, label it, and run the metareplace command with the -e option.