topic Re: "Disk Edge" alerting of different sized disks in Dynatrace Managed Q&A

"Disk Edge" alerting of different sized disks

AsafAx — Thu, 12 Sep 2024 06:45:22 GMT

Hello community!

I'm working on some alerting of disk space in an environment scope (Settings>Anomaly detection>Disk Edge), not Host/Host Group scope.

*We're in Dynatrace Managed*

I ran into a few problems and wanted to see if anyone knows about solutions/workarounds. I want to alert low disk space at either 2% or 5GB depending on the size of the disk. Alerts should only open on the rule that is less space remaining, this should make the alerts more relevant when they open.

For example,

if a disk has 7 terabytes total, alert at 5GB (0.07% of disk) remaining, not the 142GB that is 2%.
if a disk has 80 gigabytes total, alert at 2% remaining (1.6GB), not at 5GB (6.25% of the disk).

1. How do I make sure that the proper rule is used on the disk that is reaches the 2%/5GB limit? I was unable to see a way to filter by disk size, only by disk name...

This is what I have currently. If I'm not mistaken my problem could be solved by an AND between the two rules, but that doesn't seem to be what's happening here (OR):

2. Additionally, I'm not sure I understand why Mebibytes (MiB) are used instead of Megabytes (MB) when it comes to the configuration of alerts of disk space. The configuration of the threshold is only in MiB or %, but when a problem opens it displays data in MB. Differing units is problematic when it comes to events that arise.

Alert configuration in Mebibytes, data shown in Megabytes:

Any ideas?

Thanks in advance for the help 🙂

Asaf

Re: "Disk Edge" alerting of different sized disks

GosiaMurawska — Tue, 17 Dec 2024 09:52:44 GMT

Hi @AsafAx, did you manage to solve this one? It would be great if you share it with the Community 🚀

Re: "Disk Edge" alerting of different sized disks

AsafAx — Mon, 13 Jan 2025 22:43:06 GMT

Hi @GosiaMurawska,
Unfortunately we did not find a solution that would work for this 😞

Re: "Disk Edge" alerting of different sized disks

GosiaMurawska — Tue, 14 Jan 2025 08:43:39 GMT

I see 😞 fingers crossed!

Re: "Disk Edge" alerting of different sized disks

AntonPineiro — Fri, 19 Sep 2025 09:59:51 GMT

Hi,

Since you are in managed and DQL is not possible.

Maybe you can use combination of disk filters + host metadata. If means, ingest metadata, in host level, in those filesystem is higher than X. And filtering rule base on that host metadata using Disk Edge.

That is a workarround and if you need automation, maybe Ansible, Puppet, Chef can help.

Best regards

Re: "Disk Edge" alerting of different sized disks

AntonPineiro — Tue, 23 Sep 2025 13:06:01 GMT

Hi,

This product idea would help also.

Best regards