Fujitsu PRIMERGY TX2550 M5, Upgrade And Maintenance Manual

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For system relevant information, see the hardware configurator of your
server available online at the following address:
https://www.fujitsu.com/emeia/products/computing/servers
For Japan:
https://www.fujitsu.com/jp/products/computing/servers/primergy/
10.2.2 General memory population conditions
– Non-ECC DIMMs are not supported on this platform.
–
x4 and x8 DIMMs cannot be mixed in any channel.
– Mixing of LRDIMM with RDIMM type is not allowed per platform.
–
Mixing of non-3DS and 3DS LRDIMMs is not allowed per platform.
– DIMMs with different frequencies can be mixed in the system, but lowest
frequency determines the system memory speed.
–
There should be at least one DDR4 DIMM per CPU socket (slot 1A/1G).
10.2.3 Modes of operation
10.2.3.1 DDR4 DIMM
Three different memory RAS modes are supported (Lockstep Channel mode is
not supported):
–
Independent Channel mode
– Rank Sparing mode
–
Mirrored Channel mode
Below are the system level RAS mode combination limitations:
– Mixing of Independent Channel mode and Lockstep Channel mode is not
allowed.
–
Mixing of Non-Mirrored and Mirrored Channel mode is not allowed.
– Mixing of Lockstep mode and Mirrored Channel mode is not allowed.
–
Mixing of Rank Sparing mode and Mirrored Channel mode is not allowed.
Main memory
396 Upgrade and Maintenance Manual TX2550 M5