Following Techno Dad Life's guides on Youtube, I was able to install OMV under Proxmox. I was also able to easily create a unionfs + snapraid pool of 4 x 10tb drives. 2 for data, 2 for parity, all under OMV. The drives will be used solely for media and long-term seeding (I have qbtorrent using VPN installed in a docker, also thanks to TDL). I have two additional 10tb drives in an external 2-bay enclosure. My goal is to plug in my external drives, backup my unionfs pool (though rsync i guess?) and unmount; and possibly access that pool in another computer if necessary. I intend to have the backup offline. I have a few questions:
1- Is there a way through the OMV GUI to mount and unmount a unionfs pool? Or better yet why can't I unmount the pool under 'File Systems' (the button is grayed out)?
2- Is rsync the most effective way currently in OMV to backup to ? USB Backup is another option.
3- Would I need an install of mergerfs/unionfs in any machine I want to access my external pool?
4- What alternatives would you recommend in OMV?
If this isn't feasible, I was thinking to create another instance of OMV under Proxmox, route the usb port that I use to connect the external drives, create a network share + remote mount on the first OMV, use duplicati and only turn that VM on when backing up. And I guess access the files through a network share?
I know this is a long post. I have looked here, reddit, etc. and read the respective docs for each tool and haven't found what I need for my needs. I appreciate any answers/suggestions. Thank you!