IBM x3350 - System - 4192 Installation Manual page 30

v The server can operate in single channel mode or dual channel mode.
v DIMM population is based on single-rank, double-rank, or mix single-rank and
v When you install or remove DIMMs, the server configuration information
To install a DIMM, complete the following steps:
1. Read the safety information that begins on page v and "Installation guidelines"
2. Turn off the server and peripheral devices and disconnect the power cords and
3. Open the retaining clip on each end of the DIMM connector.
16
IBM System x3350 Types 4192 and 4193: Installation Guide
DIMMs in the DIMM 1 and DIMM 3 connectors. However, the size, speed, type,
and technology of the DIMMs that you install in the DIMM 2 and DIMM 4
connectors must match each other.
double-rank DIMMs. DIMMs must be installed in order, starting with the DIMM
connector that is farthest from the memory controller hub. Double-rank DIMMs
must be installed in the DIMM connector that is farthest from the memory
controller hub when you install a combination of single-rank and double-rank
DIMMs. The following tables show examples of populating the server with
different combinations of single-rank and double-rank DIMMs.
Table 3. Interleave Mode DIMM slot population
First pair
DIMM 1 DIMM 3
Single-rank Single-rank
Single-rank Single-rank
Double-rank Double-rank
Double-rank Double-rank
changes. When you restart the server, the system displays a message that
indicates that the memory configuration has changed.
on page 7.
all external cables. Remove the cover (see "Removing the server cover" on
page 9).
Attention: To avoid breaking the retaining clips or damaging the DIMM
connectors, open and close the clips gently.
Second pair
DIMM 2 DIMM 4
Single-rank Single-rank
Double-rank Double-rank
Single-rank Single-rank
Double-rank Double-rank
Remarks
Recommend this
configuration as
the first choice.
Recommend this
configuration as
the second
choice.