I am assuming that SERVER and SERVER2 are both member server computers and not domain controller computers.

When I replace old server computers I try and assign the name of the old server computer I'm replacing to the new machine. This is a common practice. (If you're consolidating servers then that's a a whole different "can of worms".)

There's no problem with renaming a domain member server computer after it's joined to the domain. (Supposedly you can rename domain controllers in the Server 2008 version of Active Directory, but I haven't tried it yet.) Of course, in the case of re-using a name that was already assigned to another computer, you'll want to either take the original computer holding that name offline or rename it.

I've done what you're describing many, many times with various versions of Windows. From the point you've described, I'd rename "SERVER" to "OLDSERVER", and "SERVER2" to "SERVER", leaving both joined to the domain throughout the process. You don't have to disjoin "SERVER" from the domain in this process. Once you've renamed "SERVER" while joined to the domain to "OLDSERVER", the object in the AD previously named "SERVER" will change to "OLDSERVER", freeing the name "SERVER" to be assigned to "SERVER2".

As an aside: I have no idea why you'd be running "newsid" unless you installed the system from a disk image (and even then, you should be using SYSPREP to change the SID). You don't need to regnerate the SID unless the SID is a duplicate of another machine's (like if the machine is a disk cloned image of another machine).

Migrate to new server 2008 file server but keep old server name (under domain AD)
As a follow-on to this question about estimating a transfer function of an unknown system using a Wiener filter, 


How would you put a minimum MSE criteria on how well the estimated filter weights matched the actual transfer function of the system? [Suppose you needed the MSE to be no more than -50dB]?
How would you change his formulation if you wanted poles as well as zeroes (an IIR rather than an FIR filter)?

