backup restoration proxmox storage

Hello friends, I have a problem with my proxmox, when doing an update I had a power outage, at that moment when starting the system one of the vms stopped starting, doing disk analysis, I'm using linux ubuntu, I have 16 tb of file in a .raw file, would anyone have a solution on how I can open it...

Hello, Does a solution exist for backing up VMs from a first proxmox environment and then restoring them on a second (new) proxmox environment ? I wanna transfer my existing machines on a new system with more important capacity of storage and Raid 1. Thx for your help Olivier, Proxmox beginner