Backup Proxmox system configuration on a NAS

Hello
We have the latest version of Proxmox
We have programmed the backups to be made on an external NAS, but I only see that Proxmox only allows the machines to be copied
I don't see if it is possible to make a copy of the Proxmox configurations
If Proxmox or the disk fails, to reinstall and then recover the copy with its configuration
I have seen the Tuxis system on the forum, but it is on their servers,
and I am looking to be able to make the copy in the same location that I have on...

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