Retention based on age of backup

Jun 25, 2025
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We have a namespace on PBS where our Proxmox users can put « manual backups », this is backups they want to do before for example starting an upgrade or for any use they need (please note that our current main storage do not support snapshots). Currently there is no prune job on this namespace so it is only growing. Is there a way a prune job can be configured to delete say backups older than 3 months? I can't figure how to do that with the options of the prune jobs.