System interconnection
Power supply AC connection
The PSUs are accessed from the front, however the AC power cable connection is at the rear of the chassis. There are six C22 inlet
connectors, three on the rear left, and three on the rear right side. Each PSU has an associated AC good LED located next to its
associated plug. If a PSU is not present, plugging in an AC cord has no effect. If a PSU is present, and the AC power source is
providing the appropriate power signal, the PSU drives the LED ON.
The C22 Inlet connectors allow for higher exhaust temperatures. The connectors are different than previous PowerEdge offerings, a
C20 to C21 jumper cord is required to connect to the inlet connectors.
Internal fabrics
This infrastructure has numerous communication paths or fabrics interconnecting the modules. The management fabric, referred to
as Fabric-D connects from each Management Module (MM) slot with a point-to-point link to each front slot and each IOM slot. This
fabric runs at 1 Gb/sec, an improvement over previous infrastructures which have run at 100 Mb/sec. A 10Gbit/sec link spans the
Main DB between the two MM slots for communication between those modules.
A second fabric in the infrastructure is Fabric-C. This fabric connects between the IOM C1/C2 modules and each front sled slot. This
fabric is intended for storage applications, for example SAS. Each front slot Fabric-C connection has two links, each x4 in width to
each of the IOMs, IOM_C1 and IOM_C2. Today, this fabric supports 12 Gb/sec SAS and Fibre Channel at 32 Gb/sec.
USB
Each MM has a USB 2.0 link to the control panel. Only one port is operational at a time, based on which MM is active.
Front control panel and power control interfaces
Each MM displays the video to the front control panel Mini DisplayPort. The active MM drives the video. In addition to the DP video,
there are also individual links for USB from each MM to the right control panel.
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