Use this procedure to quickly configure an HACMP cluster, consisting of 2 nodes and disk heart-beating. Prerequisites: Make sure you have the following in place: Have the IP addresses and host names of both nodes, and for a service IP label. Add these into the /etc/hosts files on both nodes of the new HACMP cluster. Make sure you have the HACMP software installed on both nodes. Just install all the filesets of the HACMP CD-ROM, and you should be good. Make sure you have this entry in /etc/inittab (as one of the last entries): clinit:a:wait:/bin/touch /usr/es/sbin/cluster/.telinit In case you're using EMC SAN storage, make sure you configure you're disks correctly as hdiskpower devices. Or, if you're using a mksysb image, you may want to follow this procedure EMC ODM cleanup.