Penguin Computing Relion 1900e, Technical Manual

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Relion 1900e/2900e Manual
25 Revision 1.3
On the
S2600WT
a total of 24 DIMM slots is provided – 2 CPUs, 4 Memory Channels/CPU, 3
DIMMs/Channel. The nomenclature for memory slots is detailed in the following table:
Table 5. S2600WT Memory Slot Identification
Processor Socket 1 Processor Socket 2
(0)
Channel A
(1)
Channel B
(2)
Channel C
(3)
Channel D
(0)
Channel E
(1)
Channel F
(2)
Channel G
(3)
Channel H
A1 A2 A3 B1 B2 B3 C1 C2 C3 D1 D2 D3 E1 E2 E3 F1 F2 F3 G1 G2 G3 H1 H2 H3
Figure 11. S2600WT Memory Slot Layout
The following are the DIMM population requirements

All DIMMs must be DDR4 DIMMs

Only Error Correction Code (ECC) enabled RDIMMs and LRDIMMs are supported

Only RDIMMs and LRDIMMs with integrated on die thermal sensors (TROD) are supported

DIMM slots on any memory channel must be filled following the “farthest fill first” rule.

The DIMM slot farthest away from the processor socket must be filled first on any channel. This will
always be designated on the board as Slot 1 for the channel.

When one DIMM is used, it must be populated in the BLUE DIMM slot (farthest away from the CPU) of
a given channel.

A maximum of 8 ranks can be installed on any one channel, counting all ranks in each DIMM on the
channel.

DIMM types (RDIMM, LRDIMM) must not be mixed within or across processor sockets. This is a Fatal
Error Halt in Memory Initialization.

Mixing DIMMs of different frequencies and latencies is not supported within or across processor
sockets. If a mixed configuration is encountered, the BIOS will attempt to operate at the highest
common frequency and the lowest latency possible.