Lenovo ThinkSystem SR645 Maintenance Manual page 114

Rules you need to follow when installing or replacing a PCIe adapter.
• Slot priority for most PCIe adapters:
– One processor installed: Slot 1, slot 2
– Two processors installed: Slot 1, slot 3, slot 2
• Slot priority exceptions:
– CFF RAID/HBA adapters are always installed on slot 5.
– P2200 GPU is always installed on slot 2.
– The following two Mellanox ConnectX-6 adapters are always installed on slot 1:
– Mellanox ConnectX-6 HDR IB/200GbE Single Port x16 PCIe Adapter
– Mellanox HDR Auxiliary x16 PCIe 3.0 Connection Card
• Gen 3 riser cards only support Gen 3 adapters.
• Gen 4 riser cards support both Gen 3 and Gen 4 adapters.
• Gen 3 and Gen 4 SFF RAID adapters are available on the following server models when one processor is
installed.
– Server models with 8 x 2.5-inch front drive bays (SAS/SATA)
– Server models with 4 x 2.5-inch front drive bays (SAS/SATA)
– Server models with 4 x 3.5-inch front drive bays (SAS/SATA)
• Gen 3 and Gen 4 internal SFF RAID adapters are available on the following server models when two
processors are installed.
– Server models with 10 x 2.5-inch front drive bays (6 SAS/SATA +4 AnyBay, 10 AnyBay, or 10 NVMe)
– Server models with 4 x 3.5-inch front drive bays (AnyBay)
– Server models with 2 x 2.5-inch rear drive bays (SAS/SATA)
• Gen 4 internal CFF RAID/HBA adapters are available on the following server models and when two
processors are installed.
– Server models with 8 x 2.5-inch front drive bays (SAS/SATA)
– Server models with 10 x 2.5-inch front drive bays (6 SAS/SATA +4 AnyBay, 10 AnyBay, or 10 NVMe)
– Server models with 4 x 3.5-inch front drive bays (AnyBay)
– Server models with 2 x 2.5-inch rear drive bays (SAS/SATA)
• One super capacitor module is required for each 930/940 series internal RAID adapter. Locations and
quantities of RAID super capacitors vary by models:
Table 27. Super capacitor installation rules
Max.
Server
qty.
model
Server
models with 3
2.5'' chassis
Server
models with 2
3.5'' chassis
ThinkSystem SR645 Maintenance Manual
104
Installa-
With standard heat
tion
sinks
priority
– Super cap 1 on front
chassis
Super cap
– Super cap 2 and 3 on
1---> 2---
front chassis
>3
Super cap 1 and 2 on
front chassis
With performance
heat sinks
– Long cable: not for
Super cap 1 on front
chassis
– Short cable: for CFF
Super cap 1 in an low-
profile riser cage
Cable
CFF RAID/HBA
RAID/HBA
Long cable