hardware options 
installing 87
hardware service and support telephone numbers 157
help 155
I
independent memory mode 59 
DIMM installation order 59
DIMM installation order (2 CPUs) 62
DIMM installation order (4 CPUs) 63
memory module installation order 59
memory module installation order (2 CPUs) 62
memory module installation order (4 CPUs) 63
install 
backplane 105
chassis air baffle 123
drive 107
fan cage 109
LOM adapter 118
M.2 backplane 121
M.2 drive 120
processor and memory expansion tray 112
system board air baffle 110
top cover 128
install server in a rack 131
installation 
guidelines 56
installation guidelines 56
installation order 
DCPMM 58
DIMM 58
DIMM (independent memory mode - 2 CPUs) 62
DIMM (independent memory mode - 4 CPUs) 63
DIMM (independent memory mode) 59
DIMM (memory mirroring - 2 CPUs) 69
DIMM (memory mirroring - 4 CPUs) 70
DIMM (memory mirroring) 67
DIMM (memory sparing - 2 CPUs) 75
DIMM (memory sparing - 4 CPUs) 76
DIMM (memory sparing) 72
DRAM DIMM 58
memory module 58
memory module (independent memory mode - 2 CPUs) 62
memory module (independent memory mode - 4 CPUs) 63
memory module (independent memory mode) 59
memory module (memory mirroring - 2 CPUs) 69
memory module (memory mirroring - 4 CPUs) 70
memory module (memory mirroring) 67
memory module (memory sparing - 2 CPUs) 75
memory module (memory sparing - 4 CPUs) 76
memory module (memory sparing) 72
installing 
security bezel 130
installing options 
DIMM 104
memory module 104
installPCIe riser card assembly 114
Intel Optane DC Persistent Memory Module 78–79
L
LCD 
system information display panel 17
LCD system information display panel 17
LED 16 
ac power 21–22
dc power 21–22
Ethernet-link status 21
for Ethernet activity 21
for hard disk drive activity 15
for hard disk drive status 15
for solid state drive status 15
identification 15–16
network activity 15–16
power 15
power-on 16 
rear 21
power-supply 21–22
system error 15–16
system information 16
system locator 16
system-error 16 
rear 21–22
system-identification 
rear 21, 23
LEDs 
DIMM 25
optional processor 25
Lenovo Capacity Planner 9
Lenovo XClarity Essentials 9
Lenovo XClarity Provisioning Manager 9
light path diagnostics panel 
NMI button 21
LOM adapter 
install 118
M
M.2 backplane 
install 121
M.2 drive 
install 120
management offerings 9
memory 78–79, 139
memory configuration 138–139, 144
memory expansion tray 25
memory mirroring 67 
DIMM installation order 67
DIMM installation order (2 CPUs) 69
DIMM installation order (4 CPUs) 70
memory module installation order 67
memory module installation order (2 CPUs) 69
memory module installation order (4 CPUs) 70
Memory Mode 84–85, 87
memory module 
installing options 104
memory module installation order 77, 80, 82, 84–87 
independent memory mode 59
independent memory mode (2 CPUs) 62
independent memory mode (4 CPUs) 63
memory mirroring 67
memory mirroring (2 CPUs) 69
memory mirroring (4 CPUs) 70
memory sparing 72
memory sparing (2 CPUs) 75
memory sparing (4 CPUs) 76
Memory module installation rules and order 58
memory sparing 72 
DIMM installation order 72
DIMM installation order (2 CPUs) 75
DIMM installation order (4 CPUs) 76
memory module installation order 72
memory module installation order (2 CPUs) 75
memory module installation order (4 CPUs) 76
Mixed Memory Mode 86
ML adapter slot, 1 Gb 21
N
NMI button 23 
on the light path diagnostics panel 21
non-mirroring memory mode 
DIMM installation order 59
160 ThinkSystem SR860 Setup Guide