Is it advisable to have more than one (perhaps three) DA's running with
OES Linux for the purpose of redundancy?

If so, would it be a matter of configuring slp.conf on all servers to
include the ip addresses of all three DA's, and then configure isDA = true
on the three servers that will act as DA's? And then we would configure
dhcp to distribute the addresses of all three DA's to our workstations?

I don't see using clustering because as I understand it if a DA is not
active then it cannot discover the current services. If a server with the
DA fails and then clustering kicks in, the new DA will not have the
current services in its cache. Is that correct?

Thank you.