Observe the following PCIe slot selection priority when installing a PCIe adapter:
• For NVMe switch adapter:
Number of installed processors PCIe slot selection priority
One processor
1
Two processors 1, 5, 6
– For server models with sixteen/twenty/twenty-four NVMe drives (with two processors installed):
Server models PCIe slot selection
Sixteen NVMe drives
1, 4, 6, 7
Twenty NVMe drives 1, 4, 5, 6, 7
Twenty-four NVMe drives 1, 2, 4, 6, 7
• For 24i RAID adapter:
Number of installed processors PCIe slot selection priority
One processor
1, 2, 3
Two processors 1, 2, 3, 5, 6
• For 8i or 16i RAID adapter:
Number of installed processors PCIe slot selection priority
One processor
7, 4, 2, 3, 1
Two processors 7, 4, 2, 3, 1, 5, 6
• For an Ethernet card or a converged network adapter:
Number of installed processors
PCIe slot selection priority
One processor
4, 2, 3, 1
Two processors 4, 2, 6, 3, 5, 1
Notes:
• Depending on the specific type, your PCIe adapter and riser card for the riser assembly might look
different from the illustration in this topic.
• Use any documentation that comes with the PCIe adapter and follow those instructions in addition to the
instructions in this topic.
• Do not install PCIe adapters with small form factor (SFF) connectors in PCIe slot 6.
• ThinkSystem Mellanox ConnectX-6 HDR100 QSFP56 1-port PCIe InfiniBand adapter or ThinkSystem
Mellanox ConnectX-6 HDR100 QSFP56 2-port PCIe InfiniBand adapter is supported only when the
following requirements are met:
– The server chassis is the eight 3.5-inch-drive bays chassis, eight 2.5-inch-drive bays chassis, sixteen
2.5- inch- drive bays chassis, or twenty 2.5- inch-drive bays chassis.
– The operating temperature is equal to or less than 35°C.
Chapter 3. Server hardware setup 169
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