Table 7. Memory rank sparing mode DIMM population sequence (continued)
Number of DIMMs
Number of installed
microprocessor
DIMM connector
Sixth pair of DIMMs
1
3, 6
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.
Unlock and remove the left-side cover (see “Removing the left-side cover” on page 40).
Step 2.
Remove the air baffle if installed (see “Removing the air baffle” on page 189).
Step 3.
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
Summary of Contents for System x3500 M4
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