In terms of reliability, I can only offer my personal experience and second-hand reports. My two Windows Server 2003 machines, both updated to SP1 and in my server closet in the back, haven't been rebooted in at least four months and I see no reason to do so -- they are performing as well as they ever did. I also have reports from readers saying Windows Server 2003, with or without SP1, is the most stable version of Windows on the server ever released. I've had no problems and not heard of many, so if you have fairly mainstream hardware, I'd encourage you at this point to go ahead and make the move.
Dig Deeper on Windows legacy operating systems
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.