EFM cluster high availability

Learn why you are able to operate in an Edge Flow Manager (EFM) cluster with high availability.

In a clustered mode, EFM is highly available.

Even if individual nodes are stopped the cluster can continue operation. Nodes can stop or fail due to a variety of reasons, such as routine maintenance, loss of network connectivity, or underlying physical server host failure. By default, an EFM cluster can continue operating with up to two nodes down. If the failed nodes are restored, the cluster reforms. Note that any load that was served by a failed node is shifted to other cluster nodes. Hence capacity may fall if all nodes in the cluster were optimally utilized with regards to resources including network, CPU, memory, and disk.