This is a recent HTML Disk Space report that I created which outputs a generic HTML report that contains server disk/partition space details. I schedule it to run weekly, but obviously you can use as you wish. In short, in reads in a list of servers from a text file, queries WMI for disk space detail, uses some expressions to format and calculate the space and then outputs the results into a report, sorted in ascending order by the percent of free space, per partition. Sample output, below.