[CentOS] Hardware-independent server installation

I don't have a system similar to my active server, and I'd like to install 
CentOS to a new drive on a spare system and then load that disk in my 
server once it's configured with the services I need. How 
hardware-independent is a server installation? What should I look out for 
when doing this?

I've been using Linux on servers for several years and am a 
software/hardware integrator by day. It seems like this should be trivial 
but I'd like to know if I'm missing any obvious gotchas.

I'm guessing the biggest issue is associating eth names with actual devices 
(modules.conf?), since the systems are unlikely to use the same Ethernet 
hardware.