Western Digital WD Sentinel RX4100 User Manual - Manual (Page 103)

APPENDIX
97 WD SENTINEL RX4100
ADMINISTRATOR AND MAINTENANCE GUIDE
5. Remove the four (4) screws holding the drive to the drive tray.
6. Replace the failed drive with the approved replacement drive.
7. Replace the four (4) screws holding the drive to the drive tray.
8. Insert the drive tray into the server, snapping the drive tray handle shut.
9. The LED remains blue (static) until the rebuild is complete.