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Chapter 2: Installation
2.4 Memory Support and Installation
Note
: Check the Supermicro website for recommended memory modules.
Important:
Exercise extreme care when installing or removing DIMM modules to pre-
vent any possible damage.
Memory Support
The A2SDi-2C-HLN4F supports up to 128GB RDIMM or 32GB ECC/Non-ECC UDIMM DDR4
in two memory slots, two DIMM on single channel at up to 1866MT/s .
The A2SDi-4C-HLN4F support up to 256GB RDIMM or 64GB ECC/Non-ECC UDIMM DDR4
in four memory slots, two DIMM Per Channel (DPC) at up to 2133MT/s.
The A2SDi-8C/8C+/12C/16C-HLN4F support up to 256GB RDIMM or 64GB ECC/Non-ECC
UDIMM DDR4 in four memory slots, two DIMM Per Channel (DPC) at up to 2400MT/s.
Populating these DIMM slots with a pair of memory modules of the same type and size will
result in interleaved memory, which will improve memory performance.
Memory Population Guidelines
For optimal memory performance, follow the table below when populating memory. Populate
DIMM slots in the following order: DIMMA1, DIMMB1, then DIMMA2, DIMMB2
Unbuffered DDR4 ECC/Non-ECC DIMM Memory
DIMMs per
channel
DIMMs per
channel
DIMM Type
POR Speed
MT/s
Memory Population
Sequence
1
1
Unbuffered
DDR4 DIMM
1866, 2133, 2400
A1, A2 (2 DIMMs)
2
2
Unbuffered
DDR4 DIMM
1866, 2133, 2400
A1, B1, A2, B2
(4 DIMMs)
Recommended Population (Balanced)
DIMMA1
DIMMB1
DIMMA2
DIMMB2
Total System Memory
4GB
4GB
8GB
4GB
4GB
4GB
4GB
16GB
8GB
8GB
16GB
8GB
8GB
8GB
8GB
32GB
16GB
16GB
32GB
16GB
16GB
16GB
16GB
64GB
32GB
32GB
64GB
32GB
32GB
32GB
32GB
128GB
64GB
64GB
128GB
64GB
64GB
64GB
64GB
256GB
