Availability Guide for Application Design

Overview of Server and Network Fault Tolerance
Availability Guide for Application Design—525637-004
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ServerNet Clustering for Availability and
Performance
ServerNet clustering provides several benefits:
•
Performance. For interprocessor communication, ServerNet clusters take
advantage of the NonStop message system for low message latencies, low
message processor costs, and high message throughput. The same message
system is used for interprocessor communication within a node and between
cluster nodes. Furthermore, ServerNet clusters take advantage of the transmission
speeds of ServerNet for fast message throughput between nodes.
•
Availability. If a cluster node experiences a problem, the ServerNet cluster makes it
easy to bypass the problem by diverting the workload to other nodes.
•
Manageability. ServerNet clusters make it easy to share resources among cluster
nodes. In addition, ServerNet provides a quick-disconnect capability that makes it
easy to implement planned outages.
•
Scalability. ServerNet clusters can be expanded (up to 24 servers) as your network
load increases.