I have created alerts for my servers to tell me when drive space used reaches 90%. I have separate drives for paging and my D2D backup drives that I would like to exclude because they are designed to use all or close to all drive space. In the alert for drive space I see a box labeled "Instance". I cannot find what this means and if it can help me with this. Can the alert be configured to exlcude particular drives? Has anuyone created a SQL query to report on disk space?