What are the big differences between running GW8 Server on Windows vs Linux?

We are currently running 7.0.3 on netware, with all of our GW clients running Windows XP or 2000.

Our group is just beginning to research this issue, as we'll be upgrading to GW 8 later this year.
We are likely going to have to change our server OS as well, so we'd like to gather as much information as possible before hand.

I've been reading everything I can find on GW8, but I have not come across much information that compares Windows and Linux as GW platforms.

Any links or resources that you know of would be much appreciated.

Thanks in advance!