IBM 6385, User Manual

Page: 52 / 86

Installing a memory module
The following notes describe the types of dual inline memory modules (DIMMs) that
the system-board tray supports and other information that you must consider when
you install DIMMs:
v
The system-board tray supports fully-buffered, DDR2, ECC, PC2-5300
FB-DIMMs with advanced memory buffering.
v
When you install memory, you must install a pair of matched DIMMs.
v If you are replacing a faulty DIMM, make sure that the replacement DIMM is the
correct type of memory.
v
Install the DIMMs in the following order.
Pair DIMM connectors
First (group 1) DIMM 00 and DIMM 10
Second (group 2) DIMM 20 and DIMM 30
Third (group 1) DIMM 01 and DIMM 11
Fourth (group 2) DIMM 21 and DIMM 31
v
All DIMMs in a pair or group must be the same size, speed, type, technology,
and physical design. You can use compatible DIMMs from different
manufacturers.
v All DIMMs must have the same speed. However, different pairs or groups of
DIMMs do not have to be of the same size, type, technology, and physical
design.
v
When you restart the system-board tray after you add or remove a DIMM, the
system-board tray might display a message that the memory configuration has
changed.
To install a DIMM, complete the following steps:
1. Read the safety information that begins on page v and “Installation guidelines”
on page 23.
2. Read the documentation that comes with the DIMM.
3. Turn off the system-board tray and all attached devices (see “Turning off the
system-board tray” on page 22).
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IBM dx340 User’s Guide