SQL: deterime actual en free space
use Master select name, cast((size/128.0) as int) as TotalSpaceInMB, cast((cast(fileproperty(name, ‘SpaceUsed’) as int)/128.0) as int) as UsedSpaceInMB, cast((size/128.0 – cast(fileproperty(name, ‘SpaceUsed’) AS int)/128.0) as int) as FreeSpaceInMB from sys.database_files