How to get full featured high-available, reliable and fault-tolerant XMPP server?
You can use hardware solutions provided by Cisco. I have written an article based on my experience setting this environment at my company server. On this article I try to describe the configuration of Cisco's Server Load Balancing to get a fault-tolerant Jabber server using ejabberd as "best practise" and example:
Feel free to add any comment, suggestion or correction.