Lenovo thinksystem SR630 - Page 165

The following table shows the memory module population sequence for mirroring mode when two
processors (CPU 1 and CPU 2) are installed.
Table 48. Mirroring mode with two processors (CPU 1 and CPU 2)
Configura-
tion
DIMM slots
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
16 DIMMs 1 3 5 7 10 12 14 16
32 DIMMs 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Configura-
tion
DIMM slots
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
16 DIMMs 17 19 21 23 26 28 30 32
32 DIMMs 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
Note: DIMM configurations listed in the table support the Sub NUMA Clustering (SNC) feature, which can be
enabled via UEFI. SNC is not supported if DIMM population does not follow the sequence indicated by the
table above.
PMEM and DRAM DIMM installation order
This section contains information of how to install PMEMs and DRAM DIMMs properly.
PMEM rules
Make sure to meet the following requirements when applying PMEMs in the system.
• All the PMEMs that are installed must be of the same part number.
• All the DRAM DIMMs that are installed must be of the same type, rank, and capacity with minimum
capacity of 16 GB. It is recommended to use Lenovo DRAM DIMMs with the same part number.
Setting up the system for PMEM for the first time
Complete the following steps when installing PMEMs to the system for the first time.
1. Determine the mode and combination (see “App Direct Mode” on page 160 or “Memory Mode” on page
162).
2. Consider “PMEM rules” on page 155 and acquire the PMEMs and DRAM DIMMs that meet the
requirements.
3. Remove all the memory modules that are presently installed (see “Remove a memory module” on page
148).
4. Follow the adopted combination to install all the PMEMs and DRAM DIMMs (see “Install a memory
module” on page 164).
5. Disable security on all the installed PMEMs (see “PMEM Management options” on page 155).
6. Make sure the PMEM firmware is the latest version. If not, update it to the latest version (see
https://
sysmgt.lenovofiles.com/help/topic/com.lenovo.lxca.doc/update_fw.html
).
7. Configure the PMEMs so that the capacity is available for use (see “PMEM Management options” on
page 155).
PMEM Management options
PMEMs can be managed with the following tools:
• Lenovo XClarity Provisioning Manager (LXPM)
Chapter 4. Hardware replacement procedures 155