25968684_ZooKeeper_JMX_s__their_names_and_description_Description
[MBean] Quorum [MBean Object Name] ReplicatedServer_id<#> [Description] 
Represents the Quorum, or Ensemble - parent of all cluster members. Note that the object name includes the "myid" of the server (name suffix) that your JMX agent has connected to.
ZooKeeper JMX
Description