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APPENDIX
105
WD SENTINEL RX4100
ADMINISTRATOR AND MAINTENANCE GUIDE
Replacing the Mid-plane Card
The mid-plane in the WD Sentinel server is “cold swappable.” This means that the WD
Sentinel server must be shut down prior to your fan replacement. To shut down your WD
Sentinel server, follow the steps outline in “Shutting Down the Server” on page 45.
What you’ll Need:
Phillips screwdriver
Replacement mid-plane card
Replacing a Mid-plane Card
1. Shut down the server.
2. Disconnect all external connections.
3. Remove all hard drives from the unit.
4. Follow the steps outlined in “Removing the Unit Front Cover” on page 99.
5. Locate the mid-plane within the unit (behind the drive trays) and remove two (2) screws
holding the mid-plane to the base of the unit.
6. Remove the eight (8) screws holding the mid-plane to the mid-plane bracket.
7. Carefully pull the mid-plane away from the mid-plane bracket,
Figure 12.
8. With new mid-plane in hand, remove the connector cables from the old mid-plane and
connect them to the same location on the new mid-plane.
9. Gently place the new mid-plane in place.
10. Insert and tighten eight (8) screws attaching the mid-plane bracket to the mid-plane.
11. Insert and tighten two (2) screws attaching the mid-plane to the unit.
12. Replace the unit cover.
13. Replace the hard drives.
14. Connect all external connections.
15. Restart the server.