What is a SPOF [Single Point -of-Failure] in SAP?

A Single Point of Failure (SPOF) is any component within a system that, if it fails, causes a loss of a runtime critical service. A SPOF can be hardware or a software component. 

SPOF SAP software components are:
Message Server, 
Enqueue Server, 
The central file system and 

In a High Availability manner it is necessary to eliminate these SPOF.Be aware that it is possible to introduce additional SPOFs through configuration and programming, by adding critical, non redundant components yourself. These must be identified through an analysis and either be eliminated or covered by failover services.

tags: What is a "SPOF", sap, 
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