Notification When Storage hits 80%

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mrfixitsometimes

New Member
Aug 25, 2026
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I'm sure this is easy for most. But I just cannot seem to figure out where to setup the trigger. I'm not a Linux admin by any means. I already have email notifications setup. But what I would like is for my ProxmoxBackupServer to send me an email when the archive storage hits 80% or more. I have had it hit 100% a couple times and its a bear to deal with each time. Some fluke of an issue each time causes the GC to not work correctly. Currently running V 3.4.9. I have googled the topic for a couple hours and cannot seem to find anything relevant to what I'm looking for. A little help or pointing me into the right direction would be awesome. Thanks in advanced.
 
Sending notifications for exceeding storage limits is not possible with the current PBS feature set, using external monitoring is the best way to achieve this [0].
FWIW there is some development work in adding protections for datastores running out of space and ease of recovery [1, 2]. But these are still work-in-progress or undergoing review, so not available yet.

mrfixitsometimes said:
Currently running V 3.4.9.
Click to expand...
On a side note: PBS 3.x will be end of life with end of the month, so upgrading is strongly recommended.

[0] https://pbs.proxmox.com/docs/external-metric-server.html
[1] https://lore.proxmox.com/pbs-devel/20260430150607.330413-1-r.obkircher@proxmox.com/
[2] https://lore.proxmox.com/pbs-devel/20260702145916.360488-1-r.obkircher@proxmox.com/
 
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Reactions: gurubert and Johannes S
Thanks for the info I'll look into both suggestions. And yes we plan to get updated to the next distro at our next maintenance cycle.

Appreciate the feedback.
 
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