I want to create an alert on low space for SQL Server. My instances vary a lot between number of drives, numbers of data files on each drive etc. Some of my drives are full 99% with only SQL Server data files on there, but they are only 60% full. Some other drives have 60% free space, but the data files are nearly full.I initially thought of creating an alert for if Disk Space Used > 80% AND SUM(% free space in data files) > 80% then fire an alert. However this approach does not take into account large drive sizes (we have some greater than 4TB) and the autogrowth amounts for each database. To complicate things further, some databases have more than one data file on multiple disks.How have you solved space monitoring alerts?
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