Table 38. Memory rank sparing mode DIMM population sequence (continued)
Number of DIMMs
Number of installed
microprocessor
DIMM connector
Seventh pair of DIMMs
2
13, 14
Eighth pair of DIMMs
2
16, 17
Ninth pair of DIMMs
2
20, 21
Tenth pair of DIMMs
2
23, 24
Eleventh pair of DIMMs
2
19, 22
Twelfth pair of DIMMs
2
15, 18
Note:
DIMM connectors 3, 6, 7, 10, 15, 18, 19, and 22 are not used in memory rank sparing mode when UDIMMs
are installed in the server.
Installing a DIMM
Use this information to install a DIMM.
Read the safety information in “Safety” on page v and “Installation guidelines” on page 35.
If you are replacing a server component in the server, you need to turn off the server and peripheral devices,
and disconnect the power cords and all external cables.
To install a DIMM, complete the following steps.
Step 1.
Carefully turn the server on its side so that it is lying flat, with the cover facing up.
Attention:
Do not allow the server to fall over.
Step 2.
Unlock and remove the left-side cover (see “Removing the left-side cover” on page 184).
Step 3.
Remove the air baffle if installed (see “Removing the air baffle” on page 189).
Step 4.
Locate the DIMM connectors on the system board (see “System-board internal connectors” on
page 27). Determine the connectors into which you will install the DIMMs.
Step 5.
Open the retaining clip on each end of the DIMM connector.
Attention:
To avoid breaking the retaining clips or damaging the DIMM connectors, open and
close the clips gently.
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System x3500 M4 Installation and Service Guide
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