IBM 7379E2U User Manual - Page 100

Attention, loss of data. To avoid this potential problem, always use an electrostatic-discharge

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Table 8. Memory-mirroring mode DIMM population sequence (continued) DIMMs Number of installed microprocessors DIMM connector Second pair of DIMMs 1 2, 5 Third pair of DIMMs 1 1, 4 Fourth pair of DIMMs 2 14, 11 Fifth pair of DIMMs 2 13, 10 Sixth pair of DIMMs 2 12, 9 Note: DIMM connectors 7, 8, 15, and 16 are not used in memory-mirroring mode. When you install or remove DIMMs, the server configuration information changes. When you restart the server, the system displays a message that indicates that the memory configuration has changed. The following illustration shows how to install DIMMs 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 might result in the loss of data. To avoid this potential problem, always use an electrostatic-discharge wrist strap or other grounding system when you work inside the server with the power on. To install a DIMM, complete the following steps: 1. Read the safety information that begins on page vii and "Installation guidelines" on page 28. 2. Turn off the server and peripheral devices; then, disconnect the power cords and all external cables. 3. Remove the left-side cover (see "Removing the left-side cover" on page 48). 4. Remove the hot-swap power supply or power supplies from the server. 84 IBM System x3400 M3 Type 7378/7379: Installation and User's Guide

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Table 8. Memory-mirroring mode DIMM population sequence (continued)
DIMMs
Number of installed
microprocessors
DIMM connector
Second pair of DIMMs
1
2, 5
Third pair of DIMMs
1
1, 4
Fourth pair of DIMMs
2
14, 11
Fifth pair of DIMMs
2
13, 10
Sixth pair of DIMMs
2
12, 9
Note:
DIMM connectors 7, 8, 15, and 16 are not used in memory-mirroring mode.
When you install or remove DIMMs, the server configuration information changes.
When you restart the server, the system displays a message that indicates that the
memory configuration has changed.
The following illustration shows how to install DIMMs 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 might result in the
loss of data. To avoid this potential problem, always use an electrostatic-discharge
wrist strap or other grounding system when you work inside the server with the
power on.
To install a DIMM, complete the following steps:
1.
Read the safety information that begins on page vii and “Installation guidelines”
on page 28.
2.
Turn off the server and peripheral devices; then, disconnect the power cords
and all external cables.
3.
Remove the left-side cover (see “Removing the left-side cover” on page 48).
4.
Remove the hot-swap power supply or power supplies from the server.
84
IBM System x3400 M3 Type 7378/7379: Installation and User's Guide