Just know that this is a step forward in the direction of making it technically possible to force people to usw the app.

I disagree. There is nothing stopping that as it is. What this really does is remove one more level of control from the end user on their device.

Ask yourself if you trust them to not try and profit from this.

Im not sure what you are getting at here. Of course i don’t trust “them”. Nor do i trust any corp. It’s those reasons among others why i have completely removed google from my computing life and almost exclusively use open source software as well as self host functionally all network services.

You never specified what specs you want/require

Correct. I’ve never used banking apps in the first place anyway. If my bank doesnt have a functional website then I would change banks.

And i say this not to be difficult or contrarian. I just really hate using apps for every business in existence and simply refuse to do so. Yes I have absolutely sacrificed convenience on many occasions due to this principal.

You’re probably better off looking for hardware to meet your spec requirements and then looking into its Linux support.

Well that’s an easy fix. I just won’t use those apps.

If the total data is 3tb and you want disk failure protection I would take your two 6tb disks and put them in a mirror. With the amount of data you have and the drive sizes at your disposal that makes the most sense. This leaves you with 3tb free for growth. If you wanted an additional backup I would recommend storing it in a different location entirely or pay a cloud provider like Backblaze.

I would do this with ZFS but you can also do this via LVM or just straight md-raid/mdadm. I’m not sure what your issues are with zfs on popos but they should be resolvable as Ubuntu supports zfs fine to my knowledge.

An alternative you could consider is using mergersfs to logically pool indivial filesystems on each of the disks and then use SnapRAID to provider some level of protection. You’ll have to look into that further if interests you as I don’t have to much info in my head related to that solution. Its not as safe as a mirror but its better than nothing.

Your title is about backups but your question seems mostly just about how to set up your storage for backups.

You can go about pooling disks in a few ways but you first need to define what level of protection from failure you want. Before going further though, how much space do you project that you will need for backups?

I backed this: https://www.crowdsupply.com/cool-tech-zone/tangara

Its not yet released and is in the manufacturing process but I think it’s worth considering

The domain doesnt really matter. The mail servers reputation is what really matters. If you aren’t going to run your own mail server then you have nothing to be concerned about.

Trust no one. Not fully at least.

Ah, I was wondering why I couldn’t get it to detect my yubikey. I saw keepassxc-full in the repo but that also didn’t seem to work. I’ll have to revisit it.

Is self hosting a valid answer?

I host my own email.