Cisco UCS C250, Инструкция по установке и обслуживанию

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Cisco UCS C250 Server Installation and Service Guide
OL-20888-02
Chapter 3 Maintaining the Server
Installing or Replacing Components
DIMM Installation Procedure
To install or replace a DIMM, follow these steps:
Note Refer to the DIMM slot information and population rules before removing or installing DIMMs. See the
“Memory Performance Guidelines and Population Rules” section on page 3-19 .
Step 1 Remove an existing DIMM:
a.
Power off the server as described in the “Shutting Down and Powering Off the Server” section on
page 3-9 .
b. Disconnect all power cords from the power supplies.
c.
Slide the server out the front of the rack far enough so that you can remove the top cover. You might
have to detach cables from the rear panel to provide clearance.
Caution If you cannot safely view and access the component, remove the server from the rack.
d. Remove the top cover as described in the “Removing and Replacing the Server Top Cover” section
on page 3-10 .
e.
Remove the clear air baffle that covers the motherboard. Loosen the six thumbscrews and then lift
the baffle up and out of the server.
f. Push down on the ejector levers at both ends of the DIMM slot (see Figure 3-13 ).
g.
Grasp the DIMM by its top corners and remove it from the server. Place the DIMM on an antistatic
mat or in antistatic packaging.
Step 2 Install a DIMM:
Note If you are upgrading and adding memory, be sure to check the supported configurations shown in the
“Memory Population Rules and Supported Configurations” section on page 3-21 . Upgrading to some
configurations might require you to move existing DIMMs.
Note
If you are installing low-voltage DIMMs, see the “Low-Voltage DIMM Considerations (Generation M2
Only)” section on page 3-23 .
a.
With the ejector levers at both ends of the DIMM slot fully open, orient the DIMM’s alignment notch
with the alignment key in the DIMM slot.
b. Press down on both top corners of the DIMM simultaneously until the ejector levers click and lock
in place on the DIMM.
c.
Replace the air baffle and the top cover.
d. Replace the server in the rack, replace power cords and any other cables, and then power on the
server by pressing the
Power button.