Installing A Dimm - IBM 7383 Installation And Service Manual

The following table shows the installation sequence for memory rank sparing
mode:
Table 7. Memory rank sparing mode DIMM population sequence
Number of DIMMs
First pair of DIMMs
Second pair of DIMMs
Third pair of DIMMs
Fourth pair of DIMMs
Fifth pair of DIMMs
Sixth pair of DIMMs
Seventh pair of DIMMs
Eighth pair of DIMMs
Ninth pair of DIMMs
Tenth pair of DIMMs
Eleventh pair of DIMMs
Twelfth pair of DIMMs
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.
Before you begin
Read the safety information in "Safety" on page vii and "Installation guidelines"
on page 34.
If you are replacing a component or installing an optional device in the server, you
need to turn off the server and peripheral devices, and disconnect the power cords
and all external cables.
About this task
To install a DIMM, complete the following steps.
Procedure
1. Unlock and remove the left-side cover (see "Removing the left-side cover" on
2. Remove the air baffle if installed (see "Removing the air baffle" on page 210).
3. Open the retaining clip on each end of the DIMM connector.
Number of installed
microprocessor
1
1
1
1
1
1
2
2
2
2
2
2
page 39).
Attention: To avoid breaking the retaining clips or damaging the DIMM
connectors, open and close the clips gently.
DIMM connector
1, 2
4, 5
8, 9
11, 12
7, 10
3, 6
13, 14
16, 17
20, 21
23, 24
19, 22
15, 18
Chapter 2. Installing optional devices
65