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Chapter 3: Maintenance and Component Installation
Memory Installation
Memory Support
The X11DPL-i supports up to 1TB of ECC, 3DS Registered DIMMs (RDIMM), Load Reduced
DIMMs (LRDIMM) or 512GB of ECC RDIMM/LRDIMM DDR4-2666 memory in eight slots.
Populating these DIMM slots with memory modules of the same type and size will result in
interleaved memory, which will improve memory performance.
Check the Supermicro website for possible updates to memory support.
Installing Memory
Begin by removing power from the system as described in Section 3.1.
1. Starting with P1-DIMMA1, push the release tabs outwards on both ends of the DIMM
slot to unlock it.
2. Align the key of the DIMM with the receptive point on the memory slot and the notches
on both ends of the module with the receptive points on the slot.
3. With your thumbs on both ends of the module, press it straight down into the slot until
the module snaps into place.
4. Press the release tabs to the locked positions to secure the DIMM module into the slot.
Repeat for other DIMM slots as needed. See below for population sequence.
5. To remove a DIMM, unlock the release tabs then pull the DIMM from the memory slot.
Caution:
Exercise extreme caution when installing or removing memory modules to prevent
any possible damage to the DIMMs or slots.
DIMM Module Population Sequence
When installing memory modules, the DIMM slots should be populated in the following
order:
CPU1: P1-DIMMA1, P1-DIMMB1, P1-DIMMD1 then P1-DIMME1..
CPU2: P2-DIMMA1, P2-DIMMB1, P2-DIMMD1 then P2-DIMME1.
Notes:
•
Always use DDR4 DIMM modules of the same type, size and speed.
•
Mixed DIMM speeds can be installed. However, all DIMMs will run at the speed of the
slowest DIMM.
•
The motherboard will support odd-numbered modules (1 or 3 modules installed). However,
for best memory performance, install DIMM modules in pairs to activate memory interleav-
ing.
