Selfhosted

Acronyms, initialisms, abbreviations, contractions, and other phrases which expand to something larger, that I've seen in this thread:

[Thread #119 for this comm, first seen 26th Feb 2026, 15:51] [FAQ] [Full list] [Contact] [Source code]

I have 2 500GB SSDs in RAID1 for important data, truenas apps etc..., then 32TB total in RAIDZ1 for large Dataset that won't need speed (movies, TV show, music, pictures, archives,...)

If I have a complete NAS failure, a remote backup (via rsync to a friend's NAS Weekly) of the SSD and bootable drive can be used in a new system, and my torrent app has the list and magnet of all torrents stored on the SSD so it can re-download them.

Similar to most responses, I backup whatever I created myself, not shared by someone or downloaded from somewhere. I care about pictures that I took, documents, financial records, etc, which don't take up much space at all.

The stuff that I actually care about are automatically backed up twice, once to a simple external on site and once to a cloud. The cloud rotates between the most recent backups so it never takes up more than 1tb compressed, while the local external keeps backups for much longer (something like 6tb at a time).

So you have 56TB of total storage, but how much of that 56TB is actually used? Take the amount of storage used and add 10-12% to that figure. Now you create a new NAS (preferably off-site) with that amount of storage and that becomes your backup target. Take an initial backup (locally if possible to speed up the process) and then you can use something like rsync to create incremental backups going forward. This is the method I've used and so far it has worked out well. I target 10-12% more than the amount of used storage for my backup capacity because my storage use grows reasonably slowly. If your usage grows faster you might want to increase your "buffer" a little more so that you're not having to constantly add drives to your backup target.