server/src/main/java/com/orientechnologies/orient/server/distributed/ODistributedConfiguration.java
public boolean isReplicationActive(final String iClusterName, final String iLocalNode) {
    final Collection<String> servers = getClusterConfiguration(iClusterName).field(SERVERS);
    if (servers != null && !servers.isEmpty()) {
      return true;
    }
    return false;
  }
public boolean isReplicationActive(final String iClusterName, final String iLocalNode) {
    final Collection<String> servers = getClusterConfiguration(iClusterName).field(SERVERS);
    if (servers != null && !servers.isEmpty()) {
      return true;
    }
    return false;
  }
Returns true if the replication is active, otherwise false.

@param iClusterName Cluster name, or null for *