Note:
You can install DIMMs for the microprocessor 2 once the microprocessor 2 is installed. You do not
need to wait until all of the DIMM connectors for microprocessor 1 are filled.
The following table shows the installation sequence for memory rank sparing mode:
Table 38. Memory rank sparing mode DIMM population sequence
Number of DIMMs
Number of installed
microprocessor
DIMM connector
First pair of DIMMs
1
1, 2
Second pair of DIMMs
1
4, 5
Third pair of DIMMs
1
8, 9
Fourth pair of DIMMs
1
11, 12
Fifth pair of DIMMs
1
7, 10
Sixth pair of DIMMs
1
3, 6
First pair of DIMMs
2
1, 2
Second pair of DIMMs
2
13, 14
Third pair of DIMMs
2
4, 5
Fourth pair of DIMMs
2
16, 17
Fifth pair of DIMMs
2
8, 9
Sixth pair of DIMMs
2
20, 21
Seventh pair of DIMMs
2
11, 12
Eighth pair of DIMMs
2
23, 24
Ninth pair of DIMMs
2
7, 10
Tenth pair of DIMMs
2
19, 22
Eleventh pair of DIMMs
2
3, 6
Twelfth pair of DIMMs
2
15, 18
Note:
Rank Sparing is only supported when there is more than 1DPC or if a single QRDIMM is installed
Installing a DIMM
Use this information to install a DIMM.
Read the safety information in “Safety” on page v and “Installation guidelines” on page 29.
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 182).
Step 3.
Remove the air baffle if installed (see “Removing the air baffle” on page 188).
Step 4.
Locate the DIMM connectors on the system board (see “System-board internal connectors” on
page 25). Determine the connectors into which you will install the DIMMs.
Step 5.
Open the retaining clip on each end of the DIMM connector.
Removing and replacing components
257
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