Component Access; Adapter Replacement - Lenovo ThinkSystem SR950 Setup Manual

SAS/NVMe drive backplane connectors
Figure 61. SAS/NVMe drive backplane connectors
Table 124. SAS/NVMe drive backplane connectors
Callout
1
Drive connector for SAS or NVMe drives 0, 4, 8, 12, 16,
and 20
2
Drive connector for SAS or NVMe drives 2, 6, 10, 14,
18, and 22
3
Drive connector for SAS drives 1, 5, 9, 13, 17, and 21
4
Drive connector for SAS drives 3, 7, 11, 15, 19, and 23

Component access

When installing optional components, you will often need to remove other components to gain access.
Procedures for removing and installing components to gain access to other system components are in this
section.

Adapter replacement

Adapters are in several locations in the I/O tray that is accessed from the rear of the server. You can install up
to 17 adapters in the server. The removal and installation procedures for each riser type are different and are
described in the following topics:
• PCIe adapters 1 to 4: see "Remove a PCIe adapter from slot 1 to 4" on page 175 and "Install a PCIe
adapter in slot 1 to 4" on page 181
• PCIe adapters 5 through 8 and the LOM adapter (slot 9):
- For PCIe adapters 5 through 8, see "Remove an adapter from slots 5 through 8" on page 176 and
"Install an adapter in slots 5 through 8" on page 182
- For the LOM adapter (slot 9), see "Remove a LOM adapter from slot 9" on page 177 and "Install a LOM
adapter in slot 9" on page 184
• PCIe adapters 10 to 15: see "Remove a PCIe adapter from slot 10 to 15" on page 179 and "Install a PCIe
adapter in slot 10 to 15" on page 185
• I/O adapters 16 and 17 (riser card): see "Remove an I/O adapter from slots 16 and 17" on page 180 and
"Install an I/O adapter in slots 16 and 17" on page 186
Installation considerations for the Mellanox Innova™-2 Flex Open Programmable SmartNIC
Review the following guidelines before installing the Mellanox Innova™-2 Flex Open Programmable
SmartNIC:
174
ThinkSystem SR950 Setup Guide
Callout
5
NVMe signal from compute board or storage tray
6
SAS signal from RAID card
7
Backplane power from interposer