Lenovo ThinkSystem SR650 Series Setup Manual page 143

• 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 of the same part number.
3. Refer to "DCPMM and DRAM DIMM installation order" on page 145 to determine the most suitable
combination and the following:
• Number and capacity of the DCPMMs and DRAM DIMMs to install
• Check if the presently installed processors support the combination. If not, replace the processors
with ones that support the combination.
4. Based on the determined DCPMM combination, acquire the DCPMMs, DRAM DIMMs and processors if
necessary.
5. Replace the processors if necessary (see "Processor and heat sink replacement" in Maintenance
Manual).
6. Remove all the memory modules that are installed (see "Remove a memory module" in Maintenance
Manual).
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.
Adding memory modules with DCPMMs
Follow the instructions in this section to add memory modules to the existing configuration with DCPMMs.
Complete the following steps to finish system setup to support DCPMM, and install the memory modules
according to the designated combination.
1. Update the system firmware to the latest version that supports DCPMM (see "Update the firmware" on
page 198).
2. Consider the following DCPMM requirements before acquiring new DCPMM units.
• All the DCPMMs 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 of the same part number.
3. Refer to "DCPMM and DRAM DIMM installation order" on page 145 to determine the new configuration,
and acquire memory modules accordingly.
4. If the DCPMMs are in Memory Mode and will stay in Memory Mode after new units are installed, follow
the combination in "Memory Mode" on page 149 to install the new modules in the correct slots.
Otherwise, go to the next step.
5. Make sure to back up the stored data.
6. If the App Direct capacity is interleaved:
a. Delete all the created namspaces and filesystems in the operating system.
b. Perform secure erase on all the DCPMMs that are installed. Go to Intel Optane DCPMMs ➙
Security ➙ Press to Secure Erase to perform secure erase.
Note: If one or more DCPMMs are secured with passphrase, make sure security of every unit is
disabled before performing secure erase. In case the passphrase is lost or forgotten, contact Lenovo
service.
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Chapter 3 Server hardware setup
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