If your virtualized cluster panics with the following:

Sep  8 09:18:10 node1 genunix: [ID 898738 kern.notice] Aborting node because pm_tick delay of 5492 ms exceeds 5050 ms

This is common when using Solaris Cluster in a virtual machine. The following may help the issue:

root@node1 # scconf -cw heartbeat_timeout=60000
root@node1 # scconf -cw heartbeat_quantum=10000