Fujitsu PRIMEQUEST 2000 Series Design Manual page 35

2.2.2 Memory (2/7)
Memory Installation Conditions
n
• For one CPU, 1 to 12 sets of memory modules can be installed.
• Memory must be added on a set basis.
(Add memory on a two-set basis when the Memory Mirror function is used or on a three-set basis when the
Memory Spare function is used.)
When only one set of memory modules is installed, if one module fails, the SB is disconnected from the
PPAR block. Therefore, it is recommended to install at least two sets of memory modules.
• Only the same memory modules can be installed to the same memory channel of each Memory Buffer.
Different memory modules can be installed for different memory channels.
"Same memory channel"
The same memory modules
must be installed.
"Same memory channel"
The same memory modules
must be installed.
• When the Memory Mirror function is used, install the same configuration of memory (in size and the
number of modules) in multiple memory channels that are used for mirroring.
• When the Memory Spare function is used, install the same memory modules in all six slots of the
same Memory Buffer.
PRIMEQUEST 2000 Series Design Guide
* MB: Memory Buffer
34
A "memory channel" is a DDR3 interface
connected to a Memory Buffer.
Copyright 2014 FUJITSU LIMITED