IBM BladeCenter HS22V 7871 - Page 83

v Mirrored channel mode: In mirrored channel mode, channels 2 is not used. The
memory contents on channel 0 are duplicated in channel 1. The effective
memory available to the system is only half of that installed. The maximum
available memory (with 16 GB dual-rank DIMMs) is 48 GB for a
single-microprocessor system and 96 GB for a dual-microprocessor system.
The following table shows the order that memory DIMMs are installed to use a
mirrored channel mode.
Table 5. System memory configuration for mirrored channel mode (1 microprocessor)
Installed
memory
DIMM socket
1 2 3 4 5 6 7 8 9 101112131415161718
2
DIMMs
XX
4
DIMMs
XX XX
6
DIMMs
X
1
XX X
1
XX
1. Not supported when a quad-rank DIMM is installed.
Table 6. System memory configuration for mirrored channel mode (2 microprocessors)
Installed
memory
DIMM socket
1 2 3 4 5 6 7 8 9 101112131415161718
4
DIMMs
XXXX
6
DIMMs
XX XX X X
8
DIMMs
XX XX XX XX
10
DIMMs
X
1
XX X
1
XX XX XX
12
DIMMs
X
1
XX X
1
XXX
1
XX X
1
XX
1. Not supported when a quad-rank DIMM is installed.
Chapter 5. Removing and replacing blade server components 67