Table of Contents
Advertisement
POWER7
Processor 0
POWER7
Processor 1
Figure 2-9 Memory DIMM topology
There are 16 buffered DIMM slots on the PS703 and PS704 base blade shown in Figure 2-9,
with an additional 16 slots on the PS704 expansion unit. The PS703 and the PS704 base
blade have slots labelled P1-C1 through P1-C16 as shown in Figure 2-9. For the PS704
expansion unit the numbering is the same except for the reference to the second planar
board. The numbering is from P2-C1 through P2-C16.
The memory-placement rules are as follows:
Install DIMM fillers in unused DIMM slots to ensure proper cooling.
Install DIMMs in pairs (1 and 4, 5 and 8, 9 and 12, 13 and 16, 2 and 3, 6 and 7, 10 and 11,
and 14 and 15).
Both DIMMs in a pair must be the same size, speed, type, and technology. You can mix
compatible DIMMs from different manufacturers.
Each DIMM within a processor-support group (1-4, 5-8, 9-12, 13-16) must be the same
size and speed.
Install only supported DIMMs, as described on the ServerProven web site. See:
http://www.ibm.com/servers/eserver/serverproven/compat/us/
DIMMs should be installed in specific DIMM sockets depending on the number of DIMMs to
install. This is described in the following tables. See Figure 2-9 for DIMM socket physical
layout compared to the DIMM location codes.
For the PS703, Table 2-5 shows the required placement of memory DIMMs depending on the
number of DIMMs installed.
DIMM 1 (P1-C1)
SMI
DIMM 2 (P1-C2)
DIMM 3 (P1-C3)
SMI
DIMM 4 (P1-C4)
DIMM 5 (P1-C5)
SMI
DIMM 6 (P1-C6)
DIMM 7 (P1-C7)
SMI
DIMM 8 (P1-C8)
DIMM 9 (P1-C9)
SMI
DIMM 10 (P1-C10)
DIMM 11 (P1-C11)
SMI
DIMM 12 (P1-C12)
DIMM 13 (P1-C13)
SMI
DIMM 14 (P1-C14)
DIMM 15 (P1-C15)
SMI
DIMM 16 (P1-C16)
Chapter 2. Architecture and technical overview
49
Advertisement
Table of Contents
