> I won't have shared storage for these two servers. These servers will be > firewalls, so IP's and a script to install the iptable rules will be all > that float between the servers. > > I started thinking about VMs, though. I'm not familiar with how the HA > software works with virtual machines, but was wondering if putting the > individual servers on separate hosts as VMs would provide me with fencing. An odd choice of server for an HA environment wouldn't you say? That unit is nothing more than a desktop, it really doesn't have redundant anything... Anyways, you can also use an snmp agent to down a switch port(s) that the server is attached to, I wrote one in the early 5.x days and it worked well. The cluster wiki had good docs. But that assumes you have a managed switch behind it. jlc