Lenovo ThinkSystem SR650 Series Setup Manual page 144

7. Follow the slot combination in "DCPMM and DRAM DIMM installation order" on page 145 to install all
the DCPMMs and DRAM DIMMs (see "Install a memory module" on page 136).
8. Disable security on all the installed DCPMMs (see "Configure DC Persistent Memory Module (DCPMM)"
on page 202).
9. Make sure the DCPMM firmware is the latest version. If not, update it to the latest version (see
sysmgt.lenovofiles.com/help/topic/com.lenovo.lxca.doc/update_fw.html
10. Configure DCPMMs so that the capacity is available for use (refer to "Configure DC Persistent Memory
Module (DCPMM)" on page 202).
11. Restore the data that have been backed up.
Memory module installation rules
Memory modules must be installed in a specific order based on the memory configuration that you
implement on your server.
Your server has 24 memory module slots. It supports up to 12 memory modules when one processor is
installed, and up to 24 memory modules when two processors are installed. It has the following features:
For Intel Xeon SP Gen 1:
• Supporting memory module type is as follows:
– TruDDR4 2666, single-rank or dual-rank, 8 GB/16 GB/32 GB RDIMM
– TruDDR4 2666, quad-rank, 64 GB LRDIMM
– TruDDR4 2666, octa-rank, 128 GB 3DS RDIMM
• The minimum system memory is 8 GB.
• The maximum system memory is as follows:
– 768 GB using RDIMMs
– 1.5 TB using LRDIMMs
– 3 TB using 3DS RDIMMs
For Intel Xeon SP Gen 2:
• Supporting memory module type is as follows:
– TruDDR4 2666, single-rank or dual-rank, 16 GB/32 GB RDIMM
– TruDDR4 2933, single-rank or dual-rank, 8 GB/16 GB/32 GB/64 GB RDIMM
– TruDDR4 2666, quad-rank, 64 GB 3DS RDIMM
– TruDDR4 2933, quad-rank, 128 GB 3DS RDIMM
– 128 GB/256 GB/512 GB DCPMM
• The minimum system memory is 8 GB.
• The maximum system memory is as follows:
– 1.5 TB using RDIMMs
– 3 TB using 3DS RDIMMs
– 6 TB using DCPMM and RDIMMs/3DS RDIMMs in Memory Mode
For a list of supported memory options, see:
Depending on the memory modules installed, refer to below topics for detailed installation rules:
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ThinkSystem SR650 Setup Guide
https://static.lenovo.com/us/en/serverproven/index.shtml
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