Advice needed : Very large machine

[notarobot]

Hello,
I'm seeking advice on my personnal cloud machine. It's a VMS hosting 10 Docker containers, problem is: it's around 300GB of data !
My Proxmox has only 1TB of local storage space and I think I have 200GB left on my Proxmox Backup Server.
Can someone help me figure out how I can efficiently backup this machine or maybe adapt its design so it's less space consuming ?
Maybe I got it wrong and there is other ways to do than having such a huge machine ?
Thanks for your help

 

[Dominic]

Proxmox Backup Server can do data deduplication, compression and incremental backups. But I cannot say how close to 200GB this brings your 300GB.