Pcie Slot Mapping From Compute Sleds Mapped To Storage Sleds - Dell PowerEdge FX2 Owner's Manual

Figure 25. Compute sled to PCIe slot mapping—two-bay chassis
Figure 26. Compute sled to PCIe slot mapping—three-bay chassis

PCIe slot mapping from compute sleds mapped to storage sleds

In PowerEdge FX2s enclosure configurations that support storage sleds mapped to compute sleds, the
PCIe slots map only to the compute sleds. When storage sleds are installed in the enclosure, the PCIe
slots mapped to these bays are automatically reassigned to the compute sleds installed in the upper bays
of the enclosure. The PCIe slot reassignment feature enables you to reassign the PCIe slots from
compute sleds in the lower bays to the compute sleds in the upper bays. The PCIe slot reassignment
feature applies to enclosure configurations with or without storage sleds. You can enable or disable the
PCIe reassignment option by using the CMC web interface, CMC WSMAN, or RACADM. For more
information, see the PowerEdge FX2/FX2s CMC User's Guide and the Dell Chassis Management
Controller for PowerEdge FX2/FX2s RACADM Command Line Reference Guide at Dell.com/esmmanuals.
The PCIe slots are mapped to compute sleds in the following manner:
• Four-bay chassis with two half-width compute sleds and two storage sleds—Each half-width
compute sled is mapped to four PCIe slots.
• Four-bay chassis with one half-width compute sled and three storage sleds—The half-width compute
sled is mapped to eight PCIe slots.
• Three-bay chassis with one full-width compute sled and two storage sleds—The full-width compute
sled is mapped to eight PCIe slots.
• Six-bay chassis with four quarter-width compute sleds and two storage sleds—Each quarter-width
compute sled is mapped to two PCIe slots.
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