How do you handle Disk Space alerting?

Question

Hi,The LM standard is to do disk space alerting based on the percentage of space used.&nbsp; E.g. 90% warning, 95% error, 98% critical (or whatever).&nbsp; This is great for machines with an average size drive, but is completely useless for machine with giant drives.&nbsp; We have some machines that might have drives that are multiple Terabytes in size.&nbsp; Getting an alert when a 2TB drive is 90% full doesn't help because it still has 200 Gigs free.For all our Windows servers, we've added additional alerting based on a hard coded 10 Gigs free on the C drive because Windows Updates generally have issues if you have less than that.&nbsp; This has helped a bunch for smaller drives where 10 Gigs free isn't small enough to hit the Percent-based alerting because maybe it's only a 60 Gig C drive.I'm just wondering what everyone else does for these types of alerts.&nbsp; Do you use the percentage based alerts for most machines but then create new ones, or change the percentage for large or small servers?&nbsp; Do you change everything to a hard size limit?&nbsp; Some other combination?Just looking for ideas so we can try to reduce the unnecessary alerts for servers with huge drives and get alerts for ones with tiny drives.Thanks.

mike_moniz · Answer

In the past I've pretty much done it both ways. In general I try to stick with the built-in percent options, especially as MSPs with a wide range of environments. I've sometimes even used custom thresholds like 99.63768%. I've also written custom DataSources in the past. I don't recall the specifics, I think one of them may have even switched between using % and free space depending on the size of the drive (I don't have access to it anymore).