Table 20. DIMM connectors associated with each microprocessor
Microprocessor Location
DIMM connectors
associated with the
microprocessor
Microprocessor 1 System board 1 through 12
Microprocessor 2 System board 13 through 24
Microprocessor 3 Microprocessor and memory
expansion tray
25 through 36
Microprocessor 4 Microprocessor and memory
expansion tray
37 through 48
Note: DIMMs 1 through 12 are solely associated with microprocessor 1.
Microprocessor 2 has access to DIMMs 1 through 12, but access is through
microprocessor 1. This is important if load balancing is a necessity for your
operating system or software load.
To install an additional microprocessor and heat sink, complete the following steps:
1. Read the safety information that begins on page “Safety” on page vii and
“Installation guidelines” on page 33.
2. Turn off the server (see “Turning off the server” on page 21) and all attached
peripheral devices. Disconnect all power cords; then, disconnect all external
cables from the server.
Attention: When you handle static-sensitive devices, take precautions to
avoid damage from static electricity. For details about handling these devices,
see “Handling static-sensitive devices” on page 35.
3. Remove the server top cover (see “Removing the server top cover” on page
36).
4. If a power supply is installed in bay 2, slide power supply 2 out of the bay
slightly.
5. Remove the microprocessor and memory expansion tray (see “Removing the
microprocessor and memory expansion tray assembly” on page 278) or DIMM
air baffle (see “Removing the DIMM air baffle” on page 210), whichever one is
installed.
Note: You only need to remove the DIMM air baffle or microprocessor and
memory expansion tray if you are installing a microprocessor in socket 2.
6. Locate microprocessor socket 2 on the system board.
7. Remove the microprocessor air baffle (see “Removing the microprocessor air
baffle” on page 39).
8. Install the microprocessor:
a. Locate the two release levers on microprocessor socket 2. Press the release
lever on the right down and inward toward the socket and lift it up to the
fully open position; then, press the release lever on the left down and
inward toward the socket and lift it up to the fully open position.
b. Lift the microprocessor bracket frame by the tab into the open position.
Attention: When you handle static-sensitive devices, take precautions to
avoid damage from static electricity. For details about handling these
devices, see “Handling static-sensitive devices” on page 35.
Chapter 2. Installing optional devices 91
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