Owners Manual

● To enable switch configuration before imaging the compute sleds, you must allow the I/O module(s) to power up before
turning on the compute sleds.
● Each half-width and quarter-width compute sled installed in the PowerEdge FX2s enclosure supports one PCIe mezzanine
card. Each full-width compute sled supports two PCIe mezzanine cards. To locate the PCIe expansion bus slots in the
compute sleds, see the relevant compute sled Owner's Manual at Dell.com/poweredgemanuals. The PCIe mezzanine
cards are mapped to the PCIe expansion slots on the enclosure. For more information, see PCIe expansion slot mapping on
page 27.
NOTE: Only PCIe mezzanine cards can be installed in the compute sleds. Non-PCIe mezzanine cards such as Ethernet,
Fibre Channel, or InfiniBand mezzanine cards are not supported. If a non-PCIe mezzanine card is installed in the
compute sled, the amber light blinks on the compute sled to indicate a mismatch, and the sled does not power on.
Configuring network settings for the I/O module
You can specify the network settings for the interface used to manage the I/O module.
Before configuring the network settings for the I/O module, make sure the I/O module is turned on.
To configure the network setting, you must have administrator privileges for the LOM network to configure the I/O module in
Group A.
You can configure the network settings by using the following:
● CMC Web interface
●
RACADM
For more information on configuring the network settings, see the Dell PowerEdge FX2/FX2s CMC User’s Guide at Dell.com/
esmmanuals.
Expansion bus
Expansion bus refers to the PCIe connections between the compute sleds and the PowerEdge FX2s enclosure. The expansion
bus supports PCIe mezzanine cards installed in the compute sleds. PowerEdge FX2s has two PCIe switches integrated on the
PCIe switch board to connect the compute sleds to the eight low-profile PCIe expansion slots on the enclosure. Each half-width
and quarter-width compute sled supports one PCIe mezzanine card. Each full-width compute sled supports two PCIe mezzanine
cards.
NOTE: PowerEdge FX2 does not support expansion bus.
PCIe expansion slot mapping
Your system includes two PCIe switches that are integrated on the PCIe switch board. The PCIe mezzanine card(s) in each
compute sled is mapped to the PCIe switches, which are further mapped to the PCIe slots on the PCIe switch board.
NOTE: The PCIe expansion slot mapping is pre-configured.
Related references
Expansion card types and form factor on page 47
PCIe slot mapping from compute sleds on page 27
PCIe slot mapping from compute sleds mapped to storage sleds on page 29
PCIe slot mapping from compute sleds
In PowerEdge FX2s enclosure configurations that support only compute sleds, the PCIe slots are mapped to the compute sleds
in the following manner:
● Four-bay chassis—Each half-width compute sled is mapped to two PCIe slots.
● Eight-bay chassis—Each quarter-width compute sled is mapped to one PCIe slot.
● Six-bay chassis—Each quarter-width compute sled is mapped to one PCIe slot. Each half-width compute sled is mapped to
two PCIe slots.
● Two-bay chassis—Each full-width compute sled is mapped to four PCIe slots.
PowerEdge FX2/FX2s mapping configurations
27