fault tolerance tomcat4

[Matt Barre]

I am hosting several sites on a Solaris 8 SPARC box. I would like to use tomcat4 b6+ to
take care of all my serving. I've load tested it using JMeter and it performs more than
admirably for my uses. My question is how to replicate the fault tolerance I used to 
have
with apache + tomcat where I had a loadbalanced worker. Will I have to use apache to do
this or is there another way?

Matt