Supermicro SuperServer 6029U-TR25M User Manual page 36

SuperServer 6029U-T Series User's Manual
All DIMMs must be DDR4 DIMMs only.
X4 and X8 DIMMs can be mixed in the same channel.
Mixing of LRDIMMs and RDIMMs is not allowed in the same channel, across
different channels, and across different sockets.
Mixing of non-3DS and 3DS LRDIMM is not allowed in the same channel, across
different channels, and across different sockets.
DIMM Types
RDIMM
LRDIMM
3DS LRDIMM
(DDR4 Only) Socket Level Population Requirements
DDR4 Socket Level Minimum Population Requirements
- There should be at least one DDR4 DIMM per socket.
- If only one DIMM is populated in a channel, then populate it in the slot furthest away from CPU.
- Always populate DIMMs with a higher electrical loading in DIMM0 followed by DIMM1.
(DDR4 Only) Memory Populations with Possible Mixes
DDR4 RDIMM DIMM0/DIMM1
Config. Set A
Within DDR0 x8, None, x8, x8
IMC DIMM
DDR1 None or same as
Population
DDR0
DDR2 None or same as
DDR1 (excludes
DIMM 1 in 5DIMM
configurations)
(DDR4 Only) Memory Populations with Possible Mixes
3DS LRDIMM or 3DS
RDIMM
Within DDR0
IMC DIMM
DDR1
Population
DDR2
(DDR4 Only) Memory Populations with Possible Mixes
LRDIMM
Within DDR0
IMC DIMM
DDR1
Population
DDR2
Requirements: Match DIMM types installed across DDR channels within an IMC; always
populate IMC0 first.
DIMM Mixing Rules
Mixing of DIMM Types within a Channel
RDIMM
Allowed
Not Allowed
Not Allowed
DIMM0/DIMM1
Config. Set B
x4, None, x4, x4
None or same as
DDR0
None or same as
DDR1 (excludes
DIMM 1 in 5DIMM
configurations)
DIMM0/DIMM1 Config. Set A
x4, None, x4, x4
None or same as DDR0
None or same as DDR1
DIMM0/DIMM1
x4, None, x4, x4
None or same as DDR0
None or same as DDR1
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LRDIMM 3DS LRDIMM
Not Allowed Not Allowed
Allowed Not Allowed
NotAllowed Allowed
DIMM0/DIMM1 Possible Mixes
Config. Set C DIMM0/DIMM1
x8, x4, or x4, x8 Single Rank, None
Single Rank, Single Rank
None or same as
Dual Rank, Single Rank, Dual
DDR0
Rank, None
None or same as
Dual Rank, Dual Rank, Single
DDR1 (excludes
Rank, Single Rank
DIMM 1 in 5DIMM
configurations)
Possible Mixes
DIMM0/DIMM1
Quad Rank, None
Quad Rank, Quad Rank
Cannot mix 3DS LRDIMM and RDIMM
Possible Mixes
DIMM0/DIMM1
Quad Rank, None
Quad Rank, Quad Rank