Artesyn ATCA-7365 Installation and Use (November 2014) - Manual (Page 61)

Hardware Preparation and Installation
ATCA-7365 Installation and Use (6806800K65N) 61
They are described in detail in the following sections. For order numbers, refer the section
Ordering Information on page 46 .
2.5.1 DIMM Memory Modules
The blade provides up to 12 memory slots for main memory Dual In-line Memory Module
(DIMM). You may install and/or remove DIMM memory modules in order to match the main
memory size to your needs. The corresponding installation/removal procedures are described
in this section.
The location of the DIMM Memory Modules are shown in Figure "ATCA-7365 Blade Layout
(Variants with 10 DIMM sockets)" on page 56 .
When installing DIMM memory modules, the DIMM sockets farthest away on each memory
channel from the CPU device need to be populated first. Only qualified DDR3 DIMMs (Dual
Ranked RDIMM) are allowed. The reason is the thermal limit/budget of the blade and the high
variation of the power consumptions of different DIMMM types. For thermal reasons, no 4-rank
DIMMs and no dual-Die DIMM are allowed.
ATCA-7365 supports low-voltage DDR3 memory. This is available upon request.
DIMM modules used within one channel must be based on the same memory technology.
To achieve proper functionality in all use cases, it is highly recommended to insert only one
type of memory module from one vendor across all DIMM slots on the board. If you are
mixing different types of DIMMs or using the same type of DIMM from different vendors on
one blade, then the full functionality in all cases cannot be guaranteed.