Lenovo ThinkSystem SR850P Maintenance Manual page 86

Attention: Memory modules are sensitive to static discharge and require special handling. In addition to the
standard guidelines for
• Always wear an electrostatic-discharge strap when removing or installing memory modules. Electrostatic-
discharge gloves can also be used.
• Never hold two or more memory modules together so that they touch. Do not stack memory modules
directly on top of each other during storage.
• Never touch the gold memory module connector contacts or allow these contacts to touch the outside of
the memory-module connector housing.
• Handle memory modules with care: never bend, twist, or drop a memory module.
Before removing a memory module:
1. If you are removing a DCPMM in App Direct or Mixed Memory Mode, make sure to back up the stored
data, and delete any created namespace.
2. Read the safety information and installation guidelines (see
Guidelines" on page
3. Turn off the server and peripheral devices and disconnect the power cords and all external cables (see
"Power off the server" on page
4. If the server is installed in a rack, slide the server out on its rack slide rails to gain access to the top
cover, or remove the server from the rack.
5. Watch the procedure
A video of this procedure is available at YouTube:
PLYV5R7hVcs-B2y7oAb54mfyuLrIusa_qE
6. Remove the top cover (see
7. If you are not replacing the memory module that you removed, see the ThinkSystem SR850P Memory
Population Reference for the required installation order of the remaining memory modules.
8. If you are removing memory modules from the processor and memory expansion tray, do not remove
the expansion tray. Only remove the air baffle that is installed on the expansion tray.
Figure 70. Air baffle removal from the processor and memory expansion tray
ThinkSystem SR850P Maintenance Manual
78
"Handling static-sensitive devices" on page
49).
11).
"Remove the top cover" on page
51:
"Safety" on page iii
https://www.youtube.com/playlist?list=
.
133).
and "Installation