So I have some space on my server rack, but not a lot of money lying around.
What I’m trying to achieve is a nas setup for my security camera system. It has 30 cameras, and 4 drives fill up in 3 months. 3X3TB drives.
Looking on eBay for a second hand rack mounted NaS is pretty expensive. Could I build one? From a jbod or something? I’ve got a nice big space in my rack doing nothing.
(I know I could buy bigger drives, but I kinda like the idea of experimenting with something g different) ✌️💛
MPEG2 is, by today's standards, horribly inefficient, so that is to be expected. Transcoding, in that case, will gain a lot more. But if your mp4 files still compress significantly with a standard lossless compression algorithm, something is wrong with your encoder settings. Even xz, which, even at the default Level 6 is often better than zstd at 19, will generally do less than 1%, typically 0.2%, even at level 9 (the highest).
To be honest, that percentage was after deduping everything, so it could be due to dups being deduped. The first one (the MPEG2 one) was before deduping, so that should be valid.
zstd can go up to 15 on BTRFS, not higher.