v The following table lists the UDIMM memory population rule to optimize the
system performance.
Table 5. UDIMMs population rule
DIMMs connector 1 DIMMs connector 2 DIMMs connector 3 DIMMs connector 4
populated empty empty empty
populated empty populated empty
populated populated populated populated
The following illustration shows the location of the DIMM connectors on the system
board.
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:
1. Read the safety information that begins on page v and “Installation guidelines”
on page 22.
2. Turn off the server and peripheral devices and disconnect the power cords and
all external cables, if necessary.
3. Unlock and remove the side cover (see “Removing the side cover” on page 25).
4. Lay the server on its side.
5. Open the retaining clip on each end of the DIMM connector. If you are installing
a DIMM into DIMM connector 1, avoid touching the system battery.
Attention: To avoid breaking the retaining clips or damaging the DIMM
connectors, open and close the clips gently.
30 System x3100 M3 Type 4253: Installation and User’s Guide
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