If System Volume Information is taking up a large amount of space due to a third party backup product not automatically deleting the snapshots you can run the following command via the command prompt to restrict the amount of space used for snapshots in an emergency whilst determining the problem.  The same command may work for other operating systems but has not been tested.

vssadmin resize shadowstorage /on=c: /for=c: /maxsize=300GB

Please note: This is a “QUICK SUPPORT” article. The information contained herein is provided as is. As a result of the speed in making it available, the materials may include typographical errors and may be revised at any time without notice. More than likely specific steps may be missing and it could very well be assuming you have an advanced understanding on how to complete certain steps.