Quote:
the fact HP server only has 512 MB of memory, which I doubt will be sufficient, judging on how economical Windows usually deals with RAM...

You be surprised, a Windows server just doing some light file serving and backup duties (which is what WSH will be doing) can cope perfectly fine on 512 MB. In fact my main Window server here still only has 386MB and that is a database server too.

It tends to be desktop apps that use up huge gobs of memory, largely because they are more visible to users and so Microsoft et al keep throwing features at them endlessly