Hardware-based high availability
Using a WAS multiple machine configuration eliminates a given appserver process as a single point of failure. In WAS V5.0 and higher, the removal of the dependency on the administrative server process further reduces the potential that a single process failure can disrupt processing on a given node. In fact, the only single point of failure in a WebSphere cell/cluster is the Network Deployment Manager where all central administration is done. However, a failure at the Deployment Manager is less catastrophic.
See Chapter 10, Deployment Manager and Node Agent high availability for further details.
WebSphere is a trademark of the IBM Corporation in the United States, other countries, or both.
IBM is a trademark of the IBM Corporation in the United States, other countries, or both.