Western Digital My Book Thunderbolt Duo User Manual page 29

11. Close the top cover and firmly push down on the top cover button until it snaps into
place:
1
12. If the WD Drive Utilities software is not already running, click Go > Applications >
WD Drive Utilities to display the WD Drive Utilities screen (see Figure 3 on page 9).
13. Reconnect the AC adapter cable to the power connector on the back of the device
enclosure.
14. Reconnect the Thunderbolt cables.
15. Depending on the configuration of your device:
If your device is configured as . . .
A striped RAID 0 disk array
2
THEN . . .
The Finder listing and desktop icon for your
My Book Thunderbolt Duo device do not
reappear. In this case:
a. If you have more than one supported device
connected to your computer, select the one
with the drive you replaced on the WD Drive
Utilities screen and click RAID Management
> Status to display the device status.
b. Verify that the status display shows:
• Current Configuration - Stripe
• RAID Status - Offline
• Drive A Status and Drive B Status -
Unknown for the drive that you replaced
and Online for the other drive
This indication means that you must
reconfigure your striped RAID 0 disk array.
MY BOOK THUNDERBOLT DUO
USER MANUAL
(Continued)
REPLACING A DRIVE – 25