Central to my ‘Alert on low space’ job is this query, which is very handy by its self …

--spaceAlert.sql

select	volume_mount_point Drive, 
	cast(sum(available_bytes)*100 / sum(total_bytes) as int) as [Free%],
	avg(available_bytes/1024/1024/1024) FreeGB
from sys.master_files f
cross apply sys.dm_os_volume_stats(f.database_id, f.[file_id])
group by volume_mount_point
order by volume_mount_point;

 

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