NonStop NS-Series Operations Guide (H06.03+)

HP Integrity NonStop NS-Series Operations Guide—529869-001
7-1
7
ServerNet Resources: Monitoring
and Recovery
When to Use This Section on page 7-1
ServerNet Communications Network on page 7-1
System I/O ServerNet Connections on page 7-3
Monitoring the Status of the ServerNet Fabrics on page 7-3
Monitoring the ServerNet Fabrics Using OSM on page 7-4
Monitoring the ServerNet Fabrics Using SCF on page 7-4
Related Reading on page 7-8
When to Use This Section
Use this section to learn about monitoring and performing recovery operations for the
internal and external ServerNet fabrics, and to understand how an Integrity NonStop
NS-series system can be connected to legacy S-series I/O enclosures.
All Integrity NonStop system I/O is performed through the ServerNet system area
network (SAN). LSU logic boards connect the SAN to the replicated four-way
microprocessors on Integrity NonStop systems.
ServerNet Communications Network
The ServerNet communications network is a high-speed network within an Integrity
NonStop system that connects processors to each other and to peripheral controllers.
This network offers the connectivity of a standard network, but it does not depend on
shared resources such as interprocessor buses or I/O channels. Instead, the
ServerNet communications network is implemented using the ServerNet architecture,
which is wormhole-routed, full-duplex, packet-switched, and point-to-point. This
network offers low latency, low software overhead, high bandwidth, and parallel
operation.
In the ServerNet architecture, each processor maintains two independent paths to
other processors, I/O devices, and ServerNet adapters. These dual paths can be used
Note. Besides attaching legacy S-series I/O enclosures to an Integrity NonStop system,
S-series and Integrity NonStop NS-series systems can be part of the same ServerNet cluster.
For more information, see the ServerNet Cluster Supplement for Integrity NonStop NS-Series
Servers.