Lenovo ThinkSystem SR665, Setup Manual

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24 x 2.5-inch front drive bays (8SAS/SATA+16NVMe)
This section provides cable routing information for the server model with 24 x 2.5-inch front drive bays
(8SAS/SATA+16NVMe).
The server model is configured with one 8 x 2.5-inch SAS/SATA backplane (BP 1) and two 8 x 2.5-inch
AnyBay backplanes (BP 2 and BP 3). Below lists all supported configurations with these three front drive
backplanes.
Note:
The AnyBay backplanes (BP 2 and BP3) are used as pure NVMe backplanes.
Configuration
Storage controller
Qty. Type
Config. 1
2
PCIe switch
+SFF 8i RAID/HBA
Config. 2
2
PCIe switch
+SFF 16i RAID/HBA
The following table shows the cable connections for all configurations:
Configuration 1 and 2: (front drive bays only)
Front
: one 8 x 2.5-inch SAS/SATA backplane and two 8 x 2.5-inch pure NVMe backplanes
Co-
nfig.
Front BP
System board
Storage controller
PCIe switch SFF 8i RAID/HBA
SFF 16i RAID/
HBA
1
BP 1: SAS
Gen 4: C 0
Gen3: C 0, C 1
BP 2: NVMe 0–1 PCIe 1, PCIe 2
BP 2: NVMe 2–3 PCIe 3
BP 2: NVMe 4–5,
NVMe 6–7
C 0, C 1
BP3: NVMe 0–1
PCIe 4, PCIe 5
BP3: NVMe 2–3 PCIe 6
BP3: NVMe 4–5 PCIe 7
BP3: NVMe 6–7 PCIe 8
2
BP 1: SAS
Gen 4: C 0
Gen3: C 0, C 1
BP 2: NVMe 0–1
PCIe 1, PCIe 2
BP 2: NVMe 2–3 PCIe 3
BP 2: NVMe 4–5,
NVMe 6–7
C 0, C 1
BP3: NVMe 0–1 PCIe 4, PCIe 5
BP3: NVMe 2–3 PCIe 6
BP3: NVMe 4–5 PCIe 7
Chapter 3
.
Internal cable routing
93