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Dell PowerEdge R750 Installation and Service Manual

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Drive backplane

Depending on your system configuration, the drive backplanes supported are listed here:
Table 1. Supported backplane optionsThis table provides the supported drive options:
System Supported hard drives options
PowerEdgeR750 2.5-inch (x 8) NVMe backplane
3.5-inch (x 12) SAS or SATA backplane
2.5-inch (x 16) SAS, SATA or NVMe backplane (2 x 8 NVMe)
2.5-inch (x 24) SAS, SATA, NVMe backplane
Figure 1. 8 x 2.5-inch drive backplane
This image shows 8 x 2.5-inch backplane.
  1. BP_PWR_CTRL
  2. BP_DST_SA1 (PERC to backplane)
  3. BP_DST_PA1 (PCIe/NVMe connector)
  4. BP_ DST_PB1 (PCIe/NVMe connector)
  5. BP_ DST_PA2 (PCIe/NVMe connector)
  6. BP_PWR_1 (backplane power and signal cable to system board)
  7. BP_DST_PB2 (PCIe/NVMe connector)
Figure 2. 12x 3.5-inch drive backplane
This image shows 12 x 3.5-inch backplane.
  1. BP_DST_SB1
  2. BP_PWR_1 (backplane power and signal cable to system board)
  3. BP_DST_SA1
Figure 3. 16 x 2.5-inch drive backplane
This image shows 16 x 2.5-inch backplane.
  1. BP_DST_SB1 (backplane to front PERC)
  2. BP_PWR_CTRL (front PERC power and control signal)
  3. BP_DST_SA1 (backplane to front PERC)
  4. BP_PWR_1 (backplane power and signal cable to system board)
Figure 4. 24 x 2.5-inch drive backplane
This image shows 24 x 2.5-inch backplane.
  1. DST_SA1
  2. SRC_SA1
  3. DST_SB1
  4. BP_PWR_1
  5. BP_DST_PA1 (PCIe/NVMe connector)
  6. BP_PWR_2
  7. BP_ DST_PB1 (PCIe/NVMe connector)
  8. BP_PWR_CTRL
  9. BP_ DST_PA2 (PCIe/NVMe connector)
  10. BP_ DST_PB2 (PCIe/NVMe connector)
Figure 5. 24 x 2.5-inch NVMe switched backplane
This image shows the 24 x 2.5-inch NVMe switched backplane.
  1. BP_PWR_CTRL2
  2. BP_PWR_2
  3. BP_PWR_1
  4. BP_PWR_CTRL1
Figure 6. 24 x 2.5-inch NVMe switched board
This image shows the 24 x 2.5-inch NVMe switched board
  1. DST_PA2
  2. DST_PB2
  3. DST_PA1
  4. DST_PB1

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