Am required to integrate a new Intranet server into an existing Windows Server 2003 domain.
Because of the memory requirements for the Intranet 32 bits application (8Gb) we are going the 2003 R2 Enterprise version route since this seems to be the only option available to get over the 4Gb RAM limit of the Standard version. The application has not been certified 64 bits.
Since I have never installed the Enterprise version, my question to the experts is are there any pitfalls installing an Entreprise version in an existing domain where all of the existing servers are either 2003 or 2003 R2 32 bits ? The primary AD controller uses 2003 R2 Standard.
Have looked at the comparaison of the technical characteristics of the various 2003 versions but there is nothing concerning the mixing of the versions.
Don't anticipate any problems but you never know.
Prefer replies from those who have actually installed an Enterprise version.
Finally, because of the cost of the OEM Enterprise edition (which comes with 25 x CAL's), and since I don't need any CAL's, I'm planning to get an Open licence for a Windows Server 2008 R2 Enterprise and downgrade to Server 2003 R2 Enterprise. Any problems with this option ?