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Server model with 24 x 2.5-inch front drive bays (16 SAS/SATA + 8 NVMe)

This section provides cable routing information for the server model with two 8 x 2.5-inch SAS/SATA front backplanes and one 8 x 2.5-inch NVMe front backplane. The NVMe backplane provides eight NVMe drive bays (bays 0–7).

Configuration 1: three front backplanes (8 NVMe + 2 x 8 SAS/SATA), onboard connections​

Figure 1. Cable routing for configuration with three front backplanes (8 NVMe + 2 x 8 SAS/SATA)
Cable routing for configuration with three front backplanes (8 NVMe + 2 x 8 SAS/SATA)

CableFromTo
1 NVMe signal cableNVMe 0-1 connector on the NVMe backplanePCIe connector 1 on the system board
NVMe 2-3 connector on the NVMe backplanePCIe connector 2 on the system board
2 NVMe signal cableNVMe 4-5 connector on the NVMe backplanePCIe connector 3 on the system board
NVMe 6-7 connector on the NVMe backplanePCIe connector 4 on the system board
3 SAS signal cableSAS 0 and SAS 1 connectors on the SAS/SATA backplane 1PCIe connector 6 on the system board
4 SAS signal cableSAS 0 connector on the SAS/SATA backplane 2PCIe connector 7 on the system board
5 SAS signal cableSAS 1 connector on the SAS/SATA backplane 2PCIe connector 8 on the system board
Note
When the SAS/SATA backplanes are connected to PCIe connectors on the system board, only SATA drives are supported, SAS drives not supported.

Configuration 2: three front backplanes (8 NVMe + 2 x 8 SAS/SATA), one 16i RAID/HBA adapter​

Figure 2. Cable routing for configuration with three front backplanes (8 NVMe + 2 x 8 SAS/SATA) and one 16i RAID/HBA adapter
Cable routing for configuration with three front backplanes (8 NVMe + 2 x 8 SAS/SATA) and one 16i RAID/HBA adapter

Note

When a Gen 4 RAID/HBA adapter is installed, ensure that you use the corresponding Gen 4 cable:

ThinkSystem SR655 2.5" SAS/SATA 8-Bay X40 RAID Cable Kit

CableFromTo
1 NVMe signal cableNVMe 0-1 connector on the NVMe backplanePCIe connector 1 on the system board
NVMe 2-3 connector on the NVMe backplanePCIe connector 2 on the system board
3 NVMe signal cableNVMe 4-5 connector on the NVMe backplanePCIe connector 3 on the system board
NVMe 6-7 connector on the NVMe backplanePCIe connector 4 on the system board
4 SAS signal cableSAS 0 connector on the SAS/SATA backplane 1
The RAID/HBA adapter

  • Gen 3：C0

  • Gen 4：C0

SAS 1 connector on the SAS/SATA backplane 1
The RAID/HBA adapter

  • Gen 3：C1

  • Gen 4：C0

5 SAS signal cableSAS 0 connector on the SAS/SATA backplane 2
The RAID/HBA adapter

  • Gen 3：C2

  • Gen 4：C1

SAS 1 connector on the SAS/SATA backplane 2
The RAID/HBA adapter

  • Gen 3：C3

  • Gen 4：C1

Configuration 3: three front backplanes (8 NVMe + 2 x 8 SAS/SATA), two 8i RAID/HBA adapters​

Figure 3. Cable routing for configuration with three front backplanes (8 NVMe + 2 x 8 SAS/SATA) and two 8i RAID/HBA adapters
Cable routing for configuration with three front backplanes (8 NVMe + 2 x 8 SAS/SATA) and two 8i RAID/HBA adapters

Note

When a Gen 4 RAID/HBA adapter is installed, ensure that you use the corresponding Gen 4 cable:

ThinkSystem SR655 2.5" SAS/SATA 8-Bay X40 RAID Cable Kit

CableFromTo
1 NVMe signal cableNVMe 0-1 connector on the NVMe backplanePCIe connector 1 on the system board
NVMe 2-3 connector on the NVMe backplanePCIe connector 2 on the system board
2 NVMe signal cableNVMe 4-5 connector on the NVMe backplanePCIe connector 3 on the system board
NVMe 6-7 connector on the NVMe backplanePCIe connector 4 on the system board
3 SAS signal cableSAS 0 connector on the SAS/SATA backplane 1
The RAID/HBA adapter on the internal riser card

  • Gen 3：C0

  • Gen 4：C0

SAS 1 connector on the SAS/SATA backplane 1
The RAID/HBA adapter on the internal riser card

  • Gen 3：C1

  • Gen 4：C0

4 SAS signal cableSAS 0 connector on the SAS/SATA backplane 2
The RAID/HBA adapter on riser card 1

  • Gen 3：C0

  • Gen 4：C0

SAS 1 connector on the SAS/SATA backplane 2
The RAID/HBA adapter on riser card 1

  • Gen 3：C1

  • Gen 4：C0

Configuration 4: three front backplanes (8 NVMe + 2 x 8 SAS/SATA), one rear drive cage (SAS/SATA), one 24i RAID adapter​

This configuration supports one rear 2.5-inch drive cage with a 4 x 2.5-inch SAS/SATA drive backplane.

Figure 4. Cable routing for configuration with three front backplanes (8 NVMe + 2 x 8 SAS/SATA), one rear drive cage, and one 24i RAID adapter
Cable routing for configuration with three front backplanes (8 NVMe + 2 x 8 SAS/SATA), one rear drive cage, and one 24i RAID adapter

CableFromTo
1 NVMe signal cableNVMe 0-1 connector on the NVMe backplanePCIe connector 1 on the system board
NVMe 2-3 connector on the NVMe backplanePCIe connector 2 on the system board
2 NVMe signal cableNVMe 4-5 connector on the NVMe backplanePCIe connector 3 on the system board
NVMe 6-7 connector on the NVMe backplanePCIe connector 4 on the system board
3 SAS signal cableSAS 0 connector on the SAS/SATA backplane 1

Connector C0 on the RAID adapter

SAS 1 connector on the SAS/SATA backplane 1

Connector C1 on the RAID adapter

4 SAS signal cableSAS 0 connector on the SAS/SATA backplane 2

Connector C2 on the RAID adapter

SAS 1 connector on the SAS/SATA backplane 2

Connector C3 on the RAID adapter

5 SAS signal cableSAS connector on the rear backplane

Connector C4 on the RAID adapter

Configuration 5: three front backplanes (8 NVMe + 2 x 8 SAS/SATA), one rear drive cage (SAS/SATA), two RAID/HBA adapters (8i+16i)​

This configuration supports one rear 2.5-inch drive cage with a 4 x 2.5-inch SAS/SATA drive backplane.

Figure 5. Cable routing for configuration with three front backplanes (8 NVMe + 2 x 8 SAS/SATA), one rear drive cage, and two RAID/HBA adapters (8i+16i)
Cable routing for configuration with three front backplanes (8 NVMe + 2 x 8 SAS/SATA), one rear drive cage, and two RAID/HBA adapters (8i+16i)

Note

When a Gen 4 RAID/HBA adapter is installed, ensure that you use the corresponding Gen 4 cable:

For cable 3 and 4: ThinkSystem SR655 2.5" SAS/SATA 8-Bay X40 RAID Cable Kit

For cable 5: ThinkSystem SR655 2.5" & 3.5" SAS/SATA 4-Bay Rear Backplane X40 RAID Cable Kit

CableFromTo
1 NVMe signal cableNVMe 0-1 connector on the NVMe backplanePCIe connector 1 on the system board
NVMe 2-3 connector on the NVMe backplanePCIe connector 2 on the system board
2 NVMe signal cableNVMe 4-5 connector on the NVMe backplanePCIe connector 3 on the system board
NVMe 6-7 connector on the NVMe backplanePCIe connector 4 on the system board
3 SAS signal cableSAS 0 connector on the SAS/SATA backplane 1
The 16i RAID/HBA adapter

  • Gen 3：C0

  • Gen 4：C0

SAS 1 connector on the SAS/SATA backplane 1
The 16i RAID/HBA adapter

  • Gen 3：C1

  • Gen 4：C0

4 SAS signal cableSAS 0 connector on the SAS/SATA backplane 2
The 16i RAID/HBA adapter

  • Gen 3：C2

  • Gen 4：C1

SAS 1 connector on the SAS/SATA backplane 2
The 16i RAID/HBA adapter

  • Gen 3：C3

  • Gen 4：C1

5 SAS signal cableSAS connector on the rear backplane
The 8i RAID/HBA adapter

  • Gen 3：C0

  • Gen 4：C0

Configuration 6: three front backplanes (8 NVMe + 2 x 8 SAS/SATA), one rear drive cage (SAS/SATA), three 8i RAID/HBA adapters​

This configuration supports one rear 2.5-inch drive cage with a 4 x 2.5-inch SAS/SATA drive backplane.

Figure 6. Cable routing for configuration with three front backplanes (8 NVMe + 2 x 8 SAS/SATA), one rear drive cage, and three 8i RAID/HBA adapters
Cable routing for configuration with three front backplanes (8 NVMe + 2 x 8 SAS/SATA), one rear drive cage, and three 8i RAID/HBA adapters

Note

When a Gen 4 RAID/HBA adapter is installed, ensure that you use the corresponding Gen 4 cable:

For cable 3 and 4: ThinkSystem SR655 2.5" SAS/SATA 8-Bay X40 RAID Cable Kit

For cable 5: ThinkSystem SR655 2.5" & 3.5" SAS/SATA 4-Bay Rear Backplane X40 RAID Cable Kit

CableFromTo
1 NVMe signal cableNVMe 0-1 connector on the NVMe backplanePCIe connector 1 on the system board
NVMe 2-3 connector on the NVMe backplanePCIe connector 2 on the system board
2 NVMe signal cableNVMe 4-5 connector on the NVMe backplanePCIe connector 3 on the system board
NVMe 6-7 connector on the NVMe backplanePCIe connector 4 on the system board
3 SAS signal cableSAS 0 connector on the SAS/SATA backplane 1
The 8i RAID/HBA adapter on the internal riser card

  • Gen 3：C0

  • Gen 4：C0

SAS 1 connector on the SAS/SATA backplane 1
The 8i RAID/HBA adapter on the internal riser card

  • Gen 3：C1

  • Gen 4：C0

4 SAS signal cableSAS 0 connector on the SAS/SATA backplane 2
The 8i RAID/HBA adapter on riser card 1

  • Gen 3：C0

  • Gen 4：C0

SAS 1 connector on the SAS/SATA backplane 2
The 8i RAID/HBA adapter on riser card 1

  • Gen 3：C1

  • Gen 4：C0

5 SAS signal cableSAS connector on the rear backplane
The 8i RAID/HBA adapter on riser card 2

  • Gen 3：C0

  • Gen 4：C0

Configuration 7: three front backplanes (8 NVMe + 2 x 8 SAS/SATA), one middle drive cage (SAS/SATA), one 24i RAID adapter​

This configuration supports one middle 2.5-inch drive cage with two 4 x 2.5-inch SAS/SATA drive backplanes.

Figure 7. Cable routing for configuration with three front backplanes (8 NVMe + 2 x 8 SAS/SATA), one middle drive cage, and one 24i RAID adapter
Cable routing for configuration with three front backplanes (8 NVMe + 2 x 8 SAS/SATA), one middle drive cage, and one 24i RAID adapter

CableFromTo
1 NVMe signal cableNVMe 0-1 connector on the NVMe backplanePCIe connector 1 on the system board
NVMe 2-3 connector on the NVMe backplanePCIe connector 2 on the system board
2 NVMe signal cableNVMe 4-5 connector on the NVMe backplanePCIe connector 3 on the system board
NVMe 6-7 connector on the NVMe backplanePCIe connector 4 on the system board
3 SAS signal cableSAS 0 connector on the SAS/SATA backplane 1Connector C0 on the RAID adapter
SAS 1 connector on the SAS/SATA backplane 1Connector C1 on the RAID adapter
4 SAS signal cableSAS 0 connector on the SAS/SATA backplane 2Connector C2 on the RAID adapter
SAS 1 connector on the SAS/SATA backplane 2Connector C3 on the RAID adapter
5 SAS signal cableSAS connector on the middle backplane 1Connector C4 on the RAID adapter
6 SAS signal cableSAS connector on the middle backplane 2Connector C5 on the RAID adapter

Configuration 8: three front backplanes (8 NVMe + 2 x 8 SAS/SATA), one middle drive cage (SAS/SATA), two RAID/HBA adapters (8i+16i)​

This configuration supports one middle 2.5-inch drive cage with two 4 x 2.5-inch SAS/SATA drive backplanes.

Figure 8. Cable routing for configuration with three front backplanes (8 NVMe + 2 x 8 SAS/SATA), one middle drive cage, and two RAID/HBA adapters (8i+16i)
Cable routing for configuration with three front backplanes (8 NVMe + 2 x 8 SAS/SATA), one middle drive cage, and two RAID/HBA adapters (8i+16i)

Note

When a Gen 4 RAID/HBA adapter is installed, ensure that you use the corresponding Gen 4 cable:

For cable 3 and 4: ThinkSystem SR655 2.5" SAS/SATA 8-Bay X40 RAID Cable Kit

For cable 5 and 6: ThinkSystem SR655 2.5" & 3.5" SAS/SATA 4/8-Bay Middle Backplane X40 RAID Cable Kit

CableFromTo
1 NVMe signal cableNVMe 0-1 connector on the NVMe backplanePCIe connector 1 on the system board
NVMe 2-3 connector on the NVMe backplanePCIe connector 2 on the system board
2 NVMe signal cableNVMe 4-5 connector on the NVMe backplanePCIe connector 3 on the system board
NVMe 6-7 connector on the NVMe backplanePCIe connector 4 on the system board
3 SAS signal cableSAS 0 connector on the SAS/SATA backplane 1
The 16i RAID/HBA adapter

  • Gen 3：C0

  • Gen 4：C0

SAS 1 connector on the SAS/SATA backplane 1
The 16i RAID/HBA adapter

  • Gen 3：C1

  • Gen 4：C0

4 SAS signal cableSAS 0 connector on the SAS/SATA backplane 2
The 16i RAID/HBA adapter

  • Gen 3：C2

  • Gen 4：C1

SAS 1 connector on the SAS/SATA backplane 2
The 16i RAID/HBA adapter

  • Gen 3：C3

  • Gen 4：C1

5 SAS signal cableSAS connector on the middle backplane 1
The 8i RAID/HBA adapter

  • Gen 3：C0

  • Gen 4：C0

6 SAS signal cableSAS connector on the middle backplane 2
The 8i RAID/HBA adapter

  • Gen 3：C1

  • Gen 4：C0

Configuration 9: three front backplanes (8 NVMe + 2 x 8 SAS/SATA), one middle drive cage (SAS/SATA), three 8i RAID/HBA adapters​

This configuration supports one middle 2.5-inch drive cage with two 4 x 2.5-inch SAS/SATA drive backplanes.

Figure 9. Cable routing for configuration with three front backplanes (8 NVMe + 2 x 8 SAS/SATA), one middle drive cage, and three 8i RAID/HBA adapters
Cable routing for configuration with three front backplanes (8 NVMe + 2 x 8 SAS/SATA), one middle drive cage, and three 8i RAID/HBA adapters

Note

When a Gen 4 RAID/HBA adapter is installed, ensure that you use the corresponding Gen 4 cable:

For cable 3 and 4: ThinkSystem SR655 2.5" SAS/SATA 8-Bay X40 RAID Cable Kit

For cable 5 and 6: ThinkSystem SR655 2.5" & 3.5" SAS/SATA 4/8-Bay Middle Backplane X40 RAID Cable Kit

CableFromTo
1 NVMe signal cableNVMe 0-1 connector on the NVMe backplanePCIe connector 1 on the system board
NVMe 2-3 connector on the NVMe backplanePCIe connector 2 on the system board
2 NVMe signal cableNVMe 4-5 connector on the NVMe backplanePCIe connector 3 on the system board
NVMe 6-7 connector on the NVMe backplanePCIe connector 4 on the system board
3 SAS signal cableSAS 0 connector on the SAS/SATA backplane 1
The 8i RAID/HBA adapter on the internal riser card

  • Gen 3：C0

  • Gen 4：C0

SAS 1 connector on the SAS/SATA backplane 1
The 8i RAID/HBA adapter on the internal riser card

  • Gen 3：C1

  • Gen 4：C0

4 SAS signal cableSAS 0 connector on the SAS/SATA backplane 2
The 8i RAID/HBA adapter on riser card 1

  • Gen 3：C0

  • Gen 4：C0

SAS 1 connector on the SAS/SATA backplane 2
The 8i RAID/HBA adapter on riser card 1

  • Gen 3：C1

  • Gen 4：C0

5 SAS signal cableSAS connector on the middle backplane 1
The 8i RAID/HBA adapter on riser card 2

  • Gen 3：C0

  • Gen 4：C0

6 SAS signal cableSAS connector on the middle backplane 2
The 8i RAID/HBA adapter on riser card 2

  • Gen 3：C1

  • Gen 4：C0

Configuration 10: three front backplanes (8 NVMe + 2 x 8 SAS/SATA), one rear drive cage (SAS/SATA), one 32i RAID adapter​

This configuration supports one rear 2.5-inch drive cage with a 4 x 2.5-inch SAS/SATA drive backplane.

Figure 10. Cable routing for configuration with three front backplanes (8 NVMe + 2 x 8 SAS/SATA), one rear drive cage, and one 32i RAID adapter
Cable routing for configuration with three front backplanes (8 NVMe + 2 x 8 SAS/SATA), one rear drive cage, and one 32i RAID adapter

Note

The 32i RAID adapter belongs to Gen 4. Ensure that you use the corresponding Gen 4 cable:

For cable 3 and 4: ThinkSystem SR655 2.5" SAS/SATA 8-Bay X40 RAID Cable Kit

For cable 5: ThinkSystem SR655 2.5" & 3.5" SAS/SATA 4-Bay Rear Backplane X40 RAID Cable Kit

CableFromTo
1 NVMe signal cableNVMe 0-1 connector on the NVMe backplanePCIe connector 1 on the system board
NVMe 2-3 connector on the NVMe backplanePCIe connector 2 on the system board
2 NVMe signal cableNVMe 4-5 connector on the NVMe backplanePCIe connector 3 on the system board
NVMe 6-7 connector on the NVMe backplanePCIe connector 4 on the system board
3 SAS signal cableSAS 0 and SAS 1 connectors on the SAS/SATA backplane 1Connector C0 on the RAID adapter
4 SAS signal cableSAS 0 and SAS 1 connectors on the SAS/SATA backplane 2Connector C1 on the RAID adapter
5 SAS signal cableSAS connector on the rear backplaneConnector C3 on the RAID adapter

Configuration 11: three front backplanes (8 NVMe + 2 x 8 SAS/SATA), one middle drive cage (SAS/SATA), one 32i RAID adapter​

This configuration supports one middle 2.5-inch drive cage with two 4 x 2.5-inch SAS/SATA drive backplanes.

Figure 11. Cable routing for configuration with three front backplanes (8 NVMe + 2 x 8 SAS/SATA), one middle drive cage, and one 32i RAID adapter
Cable routing for configuration with three front backplanes (8 NVMe + 2 x 8 SAS/SATA), one middle drive cage, and one 32i RAID adapter

Note

The 32i RAID adapter belongs to Gen 4. Ensure that you use the corresponding Gen 4 cable:

For cable 3 and 4: ThinkSystem SR655 2.5" SAS/SATA 8-Bay X40 RAID Cable Kit

For cable 5: ThinkSystem SR655 2.5" & 3.5" SAS/SATA 4/8-Bay Middle Backplane X40 RAID Cable Kit

CableFromTo
1 NVMe signal cableNVMe 0-1 connector on the NVMe backplanePCIe connector 1 on the system board
NVMe 2-3 connector on the NVMe backplanePCIe connector 2 on the system board
2 NVMe signal cableNVMe 4-5 connector on the NVMe backplanePCIe connector 3 on the system board
NVMe 6-7 connector on the NVMe backplanePCIe connector 4 on the system board
3 SAS signal cableSAS 0 and SAS 1 connectors on the SAS/SATA backplane 1Connector C0 on the RAID adapter
4 SAS signal cableSAS 0 and SAS 1 connectors on the SAS/SATA backplane 2Connector C1 on the RAID adapter
5 SAS signal cableSAS connector on the middle backplane 1Connector C3 on the RAID adapter
SAS connector on the middle backplane 2