Waiting for cheap 20TB SSDs myself...

My current "file/media server" is a crappy old falling apart windows box with a stupid mismash of internal and external drives with no redundancy. That sucks for a number of reasons, so planning on dropping around a grand or so (including drives) on doing it properly.

Space requirement would be around 20TB-ish of usable space, with 1 disk's worth of redundancy. That can include a newish 5TB drive I have lying around however. Would also run either Plex / Jellyfin, so some horsepower for transcoding would be nice (but no need for more than a single 1080 stream at once.) 24/7 operation, so don't want anything too power hungry.

Current (loose) thinking on the hardware side is an AM4 board and a reasonably low end CPU, 3x8TB WD golds. Software side, probably CentOS, then mergerfs + snapraid. Anyone got any insight as to other options? Hardware not my speciality in particular, so open to suggestions.

I am working on partitioning my life and getting my tech stuff and online life organized. Partially fun, partially dread. Still one of the better things I'm dealing with right now.

Tech stuff mainly includes desktop PC (Qubes OS), network (to be driven by openwrt) and smartphone (already running Lineage OS, but I want to build my own LOS). This is the fun part. I want to add a NAS, but I'm too cheap for a proper one (at least for my >20TB media).

Furthermore offline stuff: Remove clutter, get analog documents properly organized (with a sustainable system) and possibly digitalized. I already have maybe half of the things I own in boxes each with a specific purpose (e.g. audio cables, network cables and game controllers each have their own box). Can be tiresome, but it's easy to see a progress and that makes it quite okay.

Online life: That's a big one. A large chunk is email and the hundreds of website accounts. I have them in a keepass file, but all running under the same address. Unfortunately I need to have a Facebook account for some purposes, but I'd like to start over with a new one. Not so easy when you have to transfer group admin privileges though, when I tried the last time I tripped some system and the new account was banned. Annoying.