Replacing a Device in a ZFS Storage Pool

http://docs.oracle.com/cd/E19253-01/819-5461/gbcet/

After you have determined that a device can be replaced, use the zpool replace command to replace the device. If you are replacing the damaged device with different device, use syntax similar to the following:

# zpool replace tank c1t1d0 c2t0d0

This command migrates data to the new device from the damaged device or from other devices in the pool if it is in a redundant configuration. When the command is finished, it detaches the damaged device from the configuration, at which point the device can be removed from the system. If you have already removed the device and replaced it with a new device in the same location, use the single device form of the command. For example:

# zpool replace tank c1t1d0

This command takes an unformatted disk, formats it appropriately, and then resilvers data from the rest of the configuration.

For more information about the zpool replace command, see Replacing Devices in a Storage Pool.