Need to upgrade OS from XP to Windows 7 on more than 1000 machines...Can any one tell me different approaches we have. Licenses part can be taken care.
If you have no, or little experience doing a multi-PC roll-out of this nature, I suggest you hire a consultant. A simple issue multiplied by 1000 is a big headache. The last thing you need is to setup a huge automated installation and find out that something was missed and none of the computers have sound or something.
Have you done inventories of the computers to make sure they all can run 7 with no issues? I doubt all of those computers are identical, is the hardware supported under Win 7? How about all of the applications in use, they all Win 7 compatable? Will your web-based applications work under I.E. 8? Will your app vendors support Win 7, and I.E. 8. Many many questions you need to have answered.
Imagine the meeting where you have to explain to the VIPs of the company why you have 1,000 users not able to use their computers.