Configuration Rules
Observe the following rules and guidelines:
• When using PMEMs in a compute node:
• The DDR4 DIMMs installed in the compute node must all be the same size.
• The PMEMs installed in the compute node must all be the same size and must have the same SKU.
• The PMEMs run at 3200 MHz.
• Each PMEM draws 18 W sustained, with a 20 W peak.
• For PMEMs and DIMMs population, see
Cisco UCS C220/C240/ B200 M6 Memory Guide
Installing Intel Optane Persistent Memory Modules
PMEM configuration is always applied to all PMEMs in a region, including a replacement PMEM. You cannot
provision a specific replacement PMEM on a preconfigured compute node.
Note
Step 1
Remove an existing PMEM:
a) Decommission and power off the compute node.
b) Remove the top cover from the compute node as described in
Removing and Installing the Compute Node Cover, on
c) Slide the compute node out the front of the chassis.
If you are moving PMEMs with active data (persistent memory) from one compute node to another as in
an RMA situation, each PMEM must be installed to the identical position in the new compute node. Note
the positions of each PMEM or temporarily label them when removing them from the old compute node.
Caution
d) Locate the PMEM that you are removing, and then open the ejector levers at each end of its DIMM slot.
Step 2
Install a new PMEM:
Before installing PMEMs, see the population rules for this compute node:
Intel Optane Persistent Memory
Module Population Rules and Performance Guidelines, on page 52
.
Note
a) Align the new PMEM with the empty slot on the motherboard. Use the alignment feature in the DIMM slot to correctly
orient the PMEM.
b) Push down evenly on the top corners of the PMEM until it is fully seated and the ejector levers on both ends lock
into place.
c) Replace the top cover to the compute node.
d) Replace the compute node in the chassis.
e) Wait for Cisco Intersight to complete its automatic discovery of the compute node.
Step 3
Perform post-installation actions:
• If the existing configuration is in 100% Memory mode, and the new PMEM is also in 100% Memory mode (the
factory default), the only action is to ensure that all PMEMs are at the latest, matching firmware level.
Cisco UCS X210c M6 Compute Node Installation and Service Note
53
Servicing a Compute Node
Installing Intel Optane Persistent Memory Modules
