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Symfoware Server V12.0.0 Cluster Operation Guide
FUJITSU Software

1.1 What Is a Cluster System?

A cluster system is a system that joins multiple systems (hereafter referred to as nodes) to achieve high availability and to expand throughput.

When a cluster system is constructed, multiple nodes can operate as one system that can process a vast amount of data and multiple jobs

simultaneously.

A cluster system has the following objectives:

High availability

If one of the nodes in a cluster system fails for any reason, any jobs operating on the node can be taken over by another node, keeping at

a minimum the time that a system must be stopped. Because a normally functioning node takes over a job while the failed node is being

repaired, recovery can be performed without any interruption to the job.

Expandability

A cluster system corresponds to any system expansion associated with processing task expansion.

High performance

For an application program for parallel processing is possible, one job can be distributed to more than one node to distribute the processing

load, improving system performance.

Symfoware Server provides failover and load sharing to help achieve these aims.

Failover operation and load sharing operation are used to meet these objectives.

Information

Definition of load sharing operation

Load sharing is a feature for processing transactions in parallel on multiple nodes in a cluster system.
The operation for performing load sharing is referred to as load sharing operation.