NonStop NS-Series Operations Guide (H06.05+)

ServerNet Resources: Monitoring and Recovery
HP Integrity NonStop NS-Series Operations Guide—529869-003
7-2
ServerNet Communications Network
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
simultaneously to improve performance, and to ensure that no single failure disrupts
communications among the remaining system components.
A ServerNet adapter provides the interface between a ServerNet fabric and the Fibre
Channel and Ethernet links. A ServerNet adapter contains a ServerNet bus interface
(SBI) and one or more ServerNet addressable controllers (SACs).
An Integrity NonStop NS16000 system uses the ServerNet fabric for interconnections
between the LSUs, p-switches, and IOAMs, enabling an Integrity NonStop system to
be connected to legacy NonStop S-series enclosures. Figure 7-1 shows a logical
representation of a complete system with the X and Y ServerNet fabrics.
Figure 7-1. Integrity NonStop NS16000 System