I have a Windows 2008 virtual server. Some how every week my server uses an extra 2 gigs and I do not know the reason. Are there any free utility tools that can scan a server and let you know whats gobbling up space?
WinDirStat does a nice job of displaying disk utilization; drilldown into directories organized by size, refresh the whole thing or just a subdirectory after you've done some cleaning. Sorts the "tree" display at the top by cumulative size as it scans; displays the lower graphical representation only after the scan finishes.
Allows you to create user-specified "cleanups" such as compressing an entire directory structure into a 7zip file via command line.
Free, GPL, stable for years. Now on sourceforge: WinDirStat Project Page
And if you don't like its default "pacman" animation while it's scanning a directory structure you can turn it off from the options.
We use TreeSize to do these types of things (although we bought the pro version as well for a few of our servers
I use JDiskReport (free) for this purpose. You can also check the other options here
I like SequoiaView because it groups trees together and you can color different file types to visually see what's taking up space.