Lenovo TD200 - ThinkServer - 3809 Hardware Maintenance Manual page 222

Table 10. Memory-mirroring mode DIMM population sequence (continued)
DIMMs
Third pair of DIMMs
Fourth pair of DIMMs
Note: DIMM connectors 7, 8, 15, and 16 are not used in memory-mirroring mode and DIMM connectors 1, 4, 9,
and 12 are not functional on this server. Do not install DIMMs in these connectors.
• When you install or remove DIMMs, the server configuration information changes. When you restart the
server, the system displays a message that indicates that the memory configuration has changed.
Attention: Static electricity that is released to internal server components when the server is powered-on
might cause the server to stop, which could result in the loss of data. To avoid this potential problem,
always use an electrostatic-discharge wrist strap or other grounding system when working inside the server
with the power on.
To install a DIMM, complete the following steps.
Step 1. Turn off the server and all attached devices; then, disconnect all power cords and external cables.
Step 2. Unlock and remove the side cover (see "Removing the side cover" on page 146).
Step 3. Rotate the power-supply cage assembly out of the chassis. Lift up the power-supply cage handle
and pull the power-supply cage assembly all the way up until the retainer latch locks the cage in
place on the chassis.
1
Power supply
2
Power-supply handle
Step 4. Remove the air baffle (see "Removing the air baffle" on page 147).
Step 5. Locate the DIMM connectors on the system board. Determine the connector in which you will
install the DIMM. Install the DIMMs in the sequence indicated earlier in this section.
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Number of installed
microprocessors
2
2
DIMM connector
11, 14
10, 13