Compaq ProLiant DL580 Setup And Installation Manual page 50

Upgrading System Memory
Several requirements must be met when installing additional memory.
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Use only ECC SDRAM.
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Remove the memory board before installing additional DIMM modules.
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Populate the DIMM slots four at a time, filling available slots at the top
of the board near the access panel first, and slots at the bottom of the
board near the system board last.
The memory architecture of Compaq ProLiant DL580 servers
incorporates a four-way interleaving design. This type of design requires
that four DIMM modules of the same size, type, and speed be installed
or removed as a group. In Compaq ProLiant DL580 servers, the four
groups containing four DIMM each on the memory board are referred to
as banks 1 through 4.
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Although DIMM modules must be matched for size, type, and speed
within a four-slot bank, the size may vary from bank to bank.
CAUTION: For best performance, use only Compaq-approved DIMM memory.
Using memory modules from other sources may adversely affect data integrity.
NOTE: For an illustrated overview of the memory installation procedure, refer to the setup
and installation poster included in the shipping box and to the hood label attached to the
inside of the system unit access panel of your server.
Removing the Memory Board
Use the following procedure to remove the memory board prior to adding or
replacing DIMM modules:
1. Remove the access panel by performing the instructions described in
"Preparing to Install Non-Hot-Plug Options" earlier in this chapter.
Installing Hardware Options 2-13