IBM BladeCenter HX5 User Manual

Memory must be installed in pairs of DIMMs per processor installed. DIMMs must
be the same size, speed, and technology within installed pairs.
If a single processor is installed, it can access the first eight DIMM slots. The
following table lists the memory configurations and installation order for the
BladeCenter HX5 when one processor is installed.
Table 6. System memory configuration for a single processor (1 microprocessor)
Installed
memory
DIMM socket
12345678
2 DIMMs X X
4 DIMMs X X X X
6 DIMMs XXXXX X
8 DIMMs XXXXXXXX
The following table lists the memory configurations and installation order for the
BladeCenter HX5 when two processors are installed.
Table 7. System memory configuration for a two processors (2 microprocessors)
Installed memory
DIMM socket
12345678910111213141516
2 DIMMs X X
4 DIMMs X X X X
6 DIMMs X X X X X X
8 DIMMs X X X X X X X X
10 DIMMs XXXXX XX XX X
12 DIMMs XXXXX XXXXXX X
14 DIMMs XXXXXXXXXXXXX X
16 DIMMs XXXXXXXXXXXXXXXX
Important: If you are installing memory in a scalable blade complex, you should
install the DIMMs to have a balance of memory among processors. Additional
memory can be installed in the top-most BladeCenter HX5 of the scalable blade
complex blade server so that you do not need to disassemble the scalable blade
complex. For example, if you are installing four DIMMs in a scalable blade
complex consisting of two BladeCenter HX5 blade servers, you would install two
DIMMs (in sockets 1 and 4) of each blade server.
If one processor is installed, memory mirroring is set up as follows:
Table 8. Memory mirroring with one processor
DIMM Quadrant Mirrored Quadrant
DIMM 1, DIMM 2, DIMM 3, DIMM 4 DIMM 5, DIMM 6, DIMM 7, DIMM 8
If two processors are installed, memory mirroring is set up as follows:
40 IBM BladeCenter HX5 Type 7873, 7872, 1910, and 1909: Installation and User's Guide

IBM BladeCenter HX5 Specifications

General

Brand	IBM
Model	BladeCenter HX5
Category	Server
Language	English