Cmc Overview; Figure 2-1 Rmc Node Front Panel Example - Silicon Graphics UV 3000 User Manual

CMC Overview

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Figure 2-1
RMC Node Front Panel Example
The CMC system for the SGI UV 3000 servers manages power control and sequencing, provides
environmental control and monitoring, initiates system resets, stores identification and
configuration information, and provides console/diagnostic and scan interface. A CMC port from
each chassis management controller connects to a dedicated Ethernet switch that provides a
synchronous clock signal to all the CMCs in an SSI.
Viewing the system from the rear, the CMC blade is on the right side of the IRU. The CMC accepts
direction from the RMC and supports powering-up and powering-down individual or groups of
compute blades and environmental monitoring of all units within its IRU. The CMC sends
operational requests to the Baseboard Management Controller (BMC) on each compute blade
installed. The CMC provides data collected from the compute nodes within the IRU to the system
RMC node upon request.
CMCs can communicate with the blade BMCs and other IRU CMCs when they are linked together
under a single system image (SSI); also called a partition. Each CMC shares its information with
the RMC as well as other CMCs within the SSI. Note that the RMC node, optional mass storage
units and any PCIe expansion enclosures do not have a CMC installed.
WAN LAN
connector
Levels of System Control
CNSL micro-USB
connector
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