The contents of the main.cf file for cluster 4 (C4) in the bottom tier, containing the sysY and sysZ nodes.

include "types.cf"

cluster C4 (
    ClusterAddress = "10.182.6.154"
    )

remotecluster C3 (
    ClusterAddress = "10.182.6.152"
    )

heartbeat Icmp (
    ClusterList = { C3 }
    AYATimeout = 30
    Arguments @C3 = { "10.182.6.152" }
    )

system sysY (
    )

system sysZ (
    )

group RSG (
    SystemList = { sysY = 0, sysZ = 1 }
    ClusterList = { C3 = 1, C4 = 0 }
    Authority = 1
    AutoStartList = { sysY, sysZ }
    ClusterFailOverPolicy = Auto
    )

    FileOnOff filec4 (
        PathName = "/tmp/filec4"
        )