Help with running servers on ESXi free version

We have to 64 bit servers that are running a similar Application and various 32 bit servers running Exchange 2003. We need to upgrade Exchange 2003 to 2010 so we are looking at virtualising the 64 bit servers and then running Exchange along the Application on the two servers. I have been asked to look at using ESXi Free version or even a paid version and also compare with running the same setup on Windows 2012 with Hyper V.
Will they be any complications in running App and Exchange virtual machines on a free version of ESXi or am I better of going for the Windows 2012 Hyper V?
Will they be any complications in running App and Exchange virtual machines on a free version of ESXi or am I better of going for the Windows 2012 Hyper V?
Comments
ICND1 [X] Done!
ICND2 [ ] Workin on it
My CCNA Lab...A work in Progress
There is going to be about 300 mailboxes with a potential growth to 500. The traffic will be quite average. I think 32GB ram will be ok because thats how much we would plan to put on the actual physical server.
Thanks everyone for your responses.
Recent: 11/2019 - RHCSA (RHEL 7); 2/2019 - Updated VCP to 6.5 (just a few days before VMware discontinued the re-cert policy...)
Working on: RHCE/Ansible
Future: Probably continued Red Hat Immersion, Possibly VCAP Design, or maybe a completely different path. Depends on job demands...
Thanks, should have been a bit more precise with my comment