.. _Prerequisites for High Availability:

Prerequisites for High Availability
-----------------------------------

For the high availability feature to work, the following prerequisites must be met:

-  A Virtuozzo Storage cluster is set up in your network. High availability is supported only for nodes joined to Virtuozzo Storage clusters.

-  The Virtuozzo Storage cluster has 5 or more nodes.

-  The default and minimum replication parameters in the cluster are set to at least 3 and 2 replicas, respectively.

