could someone give me some tips before we put ZLM into action.

We would like to manage and update our SUSE servers and workstations with ZLM 7.3 on SLES11.

About 100 managed devices running OES1, OES2, SLES10, SLES11, SLED11 and OpenSUSE 11.x if possible??!?

How much ram and disk space would I need for this scenario?

I see in the documentation that ZLM needs Hostname Resolution,
the server must resolve device hostnames using a method such as DNS. Does this mean that we need to use DDNS for our managed workstations?

Other tips also welcome!