28 007-5832-002
2: System Control
System Management Node (SMN) Overview
An Ethernet connection directly from the SMN (Figure 2-1 on page 29) to a local private or public
Ethernet allows the system to be administered directly from a local or remote console via the SGI
Management Center interface installed on the SMN. Note that there is no direct inter-connected
system controller function in the optional expansion PCIe modules.
The system controller network is designed into all IRUs. Controllers within the system report and
share status information via the CMC Ethernet interconnects. This maintains controller
configuration and topology information between all controllers in an SSI. Figure 2-2 on page 30
shows an example system control network using an optional and separate (remote) workstation to
monitor a single-rack SGI UV 2000 system. It is also possible to connect an optional PC or
(in-rack) console directly to the SMN, see Figure 2-4 on page 34.
Note: Mass storage option enclosures are not specifically monitored by the system controller
network. Most optional mass storage enclosures have their own internal microcontrollers for
monitoring and controlling all elements of the disk array. See the user’s guide for your mass
storage option for more information on this topic.
For information on administering network connected SGI systems using the SGI Management
Center, see the SGI Management Center System Administrator’s Guide (P/N 007-5642-00x).
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