Although PowerStore appliances support multi-appliance configurations to increase redundancy and fault tolerance throughout the cluster, each PowerStore appliance also has two nodes that make up an HA pair. PowerStore features fully redundant hardware and includes several high-availability features. These features are designed to withstand component failures within the system itself and in the environment. Examples of these include network or power failures. If an individual component fails, the storage system can remain online and continue to serve data. If the failures occur in separate component sets, the system can also withstand multiple failures. After a failure alert is issued, the failed component can be ordered and replaced without impact. This section reviews PowerStore redundancy and fault tolerance within the platform and the cluster.
