Fellow blogger Duncan Epping of Yellow Bricks has added a great section to his site.
The section is called ‘High Availability “Deepdive” and describes all ins-and-out of VMware HA. Have you always wondered how HA realy works, what primary and secondary nodes are, how to setup isolation response and so on? Then you should read Duncans new HA section.

The High Availibility “Deepdive” is subject to change so bookmark it and check back regularly.
Also check out the HA Advanced options if you want to know even more about VMware HA.