You never specified what specs you want/require

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

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?

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.

I mean I’m not sitting here defending soldered on ram but your unnecessary aggression and sarcasm in your previous responses overshadows the fact that while solder on ram sucks for the upgrade and repair market the underlying tech has very tangible improvements and now we can maintain that improvement and the upgrade and repair functions.

I agree, soldered ram is bad. But I disagree that LPDDR ram is fundamentally bad and this improvement allowing it to be modular while maintaining its improvements is a very good thing.

As far as your complaints of battery life on your thinpad goes, there is much more to battery life than the consumption of the memory but naturally every part plays a role and small improvements in multiple places result in a larger net improvement. I’m assuming you’re running linux which in my experience has always suffered from less than optimal power usage. I’m far from an expert in that particular area but its always been my understanding that it is largely caused by insufficient fireware support.

As a whole this looking at this article in a vacuum i only see good things. A major flaw with lpddr has been address and i will be able to expect these improvements in future systems.

So you believe that the performance improvement and power saving is not worth creating a new standard?

But the article explains that there is a technical reason.