It is a Web Based custom SQL Alert to notice user the usage of a volume (Fixed Disk) has changed more than 10 percent during last 2 hours.
It will keep active for 2 hours even if a file was copied on to a volume and then deleted.
Change the DATEDIFF(HH,DateTume,GETDATE())<2 for a different time frame (unit is Hour), and the last line for usage threshold (unit is %).
Can be used by SAM and other Orion modules such as NPM, etc.