Four-Socket Upgradable / Storage Rich - Lenovo ThinkSystem SR950 Setup Manual

Table 18. Location of the four processors and 48 supported memory module slots (viewed from the front)
CPU 3 and DIMM 25-36
CPU 1 and DIMM 1-12
Table 19. Location of the 15 supported PCIe slots (viewed from the rear)
PCIe 1
PCIe 2
PCIe 3
PCIe 4
PCIe 5

Four-socket upgradable / storage rich

This configuration allows a simple upgrade to eight-socket configurations in the future, while supports up to
24 drives and ten rear PCIe slots.
The four-socket upgradable / storage rich configurations only supports four processors with the following
requirements/capabilities:
• Only 8100 series processors are supported, and they must be configured in a ring topology.
• The upper compute tray is installed in the upper tray slot.
• All 12 fans are required to be installed.
• Up to 24 drives are supported.
Note: This configuration allows a simple upgrade to 8-socket ones. See "Eight-socket storage rich" on page
18 for details about 8-socket configurations.
This configuration comes with four processors, requires at least two 1100/1600-watt PSUs, and supports up
to:
• 48 memory modules.
• Ten rear PCIe slots.
See the following tables for the location of the supported components.
Table 20. Location of the four processors and 48 supported memory module slots (viewed from the front)
Not populated
CPU 5 and DIMM 49-60
Not populated
CPU 1 and DIMM 1-12
4. This slot is blank if a 2 x16 riser is installed.
Upper tray filler
4
4
PCIe 6 PCIe 7
CPU 4 and DIMM 37-48
CPU 2 and DIMM 13-24
PCIe 10
PCIe 11
PCIe 12
PCIe 13
PCIe 8 PCIe 9
(ML2) (LOM)
Not populated
CPU 6 and DIMM 61-72
Not populated
CPU 2 and DIMM 13-24
PCIe
4
16
4
PCIe
17
.
Chapter 1 Introduction
17