Lenovo ThinkSystem SR550 Setup Manual page 62

– Maximum:
– 384 GB using RDIMMs (two processors installed and one 32 GB RDIMM installed in each of the 12
memory module slots)
– 768 GB using LRDIMMs (two processors installed and one 64 GB LRDIMM installed in each of the
12 memory module slots)
– Type:
– TruDDR4 2666, single-rank or dual-rank, 8 GB/16 GB/32 GB RDIMMs with Error Checking and
Correcting (ECC) technology
– TruDDR4 2666, quad-rank, 64 GB LRDIMMs with ECC technology
• For Intel Xeon SP Gen 2:
– Minimum: 8 GB (only one processor installed and only one 8 GB RDIMM installed in the CPU1 DIMM3
slot)
– Maximum: 768 GB (two processors installed and one 64 GB RDIMM installed in each of the 12 memory
module slots)
– Type:
– TruDDR4 2666, single-rank or dual-rank, 16 GB/32 GB RDIMMs with ECC technology
– TruDDR4 2933, single-rank or dual-rank, 8 GB/16 GB/32 GB/64 GB RDIMMs with ECC technology
For a list of supported memory module options, see:
Notes: Before installing a memory module, ensure that all memory modules to be installed must be of the
same type. Your server supports the following types of memory modules:
• TruDDR4 RDIMM with ECC technology
• TruDDR4 LRDIMM with ECC technology
The following illustration helps you to locate the memory module slots on the system board.
Figure 33. Memory module slots on the system board
The following memory configurations are available:
• "Independent mode" on page 59
• "Mirroring mode" on page 60
• "Rank sparing mode" on page 61
ThinkSystem SR550 Setup Guide
58
http://www.lenovo.com/us/en/serverproven/