Quorum and Leader

A persistence cluster can interact with clients only when a quorum of servers exists. This requirement ensures correct replication and fault tolerance.

When a quorum exists, one of the servers takes the role of leader, that is, the server that interacts with clients. All other servers in the quorum replicate the leader’s data, but do not interact with clients.

Administrators can set the weight of each server to determine an order of relative preference in which servers become the leader.

See Also

Related concepts