Disk Space Usage will allow you to determine where your disk space is being used and by whom. You can check by Owner, Volume, Directory, File Size, or Date.
You can see who is using your space on a particular volume. How much space is being used on a particular volume or all volumes. You can determine which directories are using the space. You can locate files based on a pattern or size. You can locate files based on creation date, last access date, or modify date. You can run Disk Space Usage from a command line with options or from a batch file.
You can save your results to a Comma Separated Values (CSV) file for import into a spreadsheet or database for further analysis.