HP NonStop NS manual ServerNet Resources Monitoring and Recovery, ServerNet Communications Network

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ServerNet Resources: Monitoring and Recovery

ServerNet Communications Network on page 7-1

System I/O ServerNet Connections on page 7-4

Monitoring the Status of the ServerNet Fabrics on page 7-4

Monitoring the ServerNet Fabrics Using OSM on page 7-5

Monitoring the ServerNet Fabrics Using SCF on page 7-6

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 and when an Integrity NonStop NS-series system can be connected to legacy NonStop S-series I/O enclosures.

Notes. Integrity NonStop NS16000 systems support connectivity to NonStop S-series I/O enclosures, Integrity NonStop NS14000 and NS1000 systems do not. For more information, see Differences Between Integrity NonStop NS-Series Systems on page 2-2.

An Integrity NonStop NS16000 system can be part of the same ServerNet cluster as NonStop S-series systems, an Integrity NonStop NS14000 system cannot be. For more information, see the ServerNet Cluster Supplement for Integrity NonStop NS-Series Servers.

Integrity NonStop NS1000 systems do not support ServerNet clusters.

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 (except for Integrity NonStop NS1000 systems, which have no LSUs; see System I/O ServerNet Connections on page 7-4).

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 uses 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

HP Integrity NonStop NS-Series Operations Guide—529869-005

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