Index
2.5-inch drive backplane 
installing options 34
removing 57
A
activity LED 15
air baffle 
removing 33
replacing 60
B
back up the compute node configuration 79
button, power 15
C
CMOS battery (CR2032) 19
collecting service data 90
Common installation issues 85
components 
system board 19
compute node cover 
installing 61
removing 32
compute node in the chassis 
installing 63
Compute node setup 27
compute node setup checklist 27
Configuration - ThinkSystem SN850 67
configure the firmware 72
connectors, system board 19
contamination, particulate and gaseous 9
cover 
removing 32
CPU 
option install 47
creating a personalized support web page 89
custom support web page 89
D
DCPMM 40, 74
devices, static-sensitive 
handling 31
DIMM 
installing options 37
DIMM connectors 19
DIMM installation order 40
Drive status LED 15
F
fabric connector 
location 19
fault LED 15
features 3
firmware updates 1
flash power module 
installing 55
G
gaseous contamination 9
Getting help 89
guidelines 
options installation 28
system reliability 30
H
handling static-sensitive devices 31
hardware options 
installing 31
hardware service and support telephone numbers 91
HDD backplane connector 19
help 89
hot-swap hard disk or solid-state drive 
installing options 35
I
identification LED 15
installation 1 
guidelines 28
installation guidelines 28
installing 
compute node 63
compute node cover 61
flash power module 55
installing options 
2.5-inch drive backplane 34
DIMM 37
hot-swap hard disk or solid-state drive 35
interposer card 49
I/O expansion adapter 41
M.2 backplane 46
M.2 driver 43
RAID adapter 52
Intel Optane DC Persistent Memory Module 40
interposer card 
installing options 49
introduction 1
I/O expansion adapter 
installing options 41
I/O expansion connectors 19
J
jumpers, system board 20
K
KVM cable 22
L
LEDs 
activity 15
fault 15
identification 15
power 15
Lenovo Capacity Planner 10
© Copyright Lenovo 2017, 2022
93