What's the best and cost effective way to backup LXCs/VMs media and data?

[roxy]

I am using pve with some LXCs which should use/access the same storage (ca 12 TB of mixed data with movies, shows, music, documents etc.) Now I'd like to backup the LXCs as well as the data. My favorite would be an external storage which I connect once a week and than all changes will be synced. Does anyone know a solid solution for such a task? I already use the proxmox integrated Backup routine for LXCs (without the data). Should in use it for the Data as well? How do you do your backup/archive?
PS: Proxmox Backup Server would only be possible as LXC (or VM?) on the same host.

 

[Daniel_Dog]

The way I backup my VMs is to just backup via the build-in backup option and add a custom backup script to it that uploads my backup files to a rsync location. (Another server)

https://forum.proxmox.com/threads/where-to-add-post-backup-script-to-scheduled-backup.139614/
https://github.com/realcryptonight/...7b729c262d/custom-scripts/create_templates.sh

 

[roxy]

And would you recommend to backup my 12 TB data via the build-in backup option as well?

 

[Daniel_Dog]

That is what I personally do.
Do note that video and images cannot be compressed so your backup sizes will be really big even with compression.
So make sure you have enough storage for the backup on the other end. (As I would not be suprised that the backup sizes are about as big as the VM is right now.)