When I asked for the 32-bit version, I was then informed that the Dassault License Server will not run in a 32-bit environment like AutoDesk and Siemens. So, now adding a Catia seat should be a no-brainer as well right? Well. Once we did, no issues on the virtual environment. The only thing we had to do to keep the license servers running was get the new Composite ID's, etc to AutoDesk and Siemens and obtain new license files.
Although the Win 2003 boxes were virtualized to start, we have also installed Win 2012 servers so we can start migrating services, etc. Last year, we finally caught up to the industry and virtualized them on VMWare with 2 ESX hosts hosting many Windows servers.
Up until a year ago, all of the servers in our data center were Win 2003 physical (one physical box per server). Our licenses are floating seats and we serve them out via 3 license servers in a redundant configuration. We have users here using both AutoDesk and Siemens products. In reference to the previous post, we just purchased a Catia seat from our reseller. Thread560-360863: License server in a virtualized environment