Yes, ZFS is commonly known for heavy disk I/O and also huge RAM usage, the rule used to be “1GB of RAM for every TB of disk” but that’s not compulsory.
Meanwhile, about BTRFS, keep in mind that Synology uses a mixed recipe because the RAID code of BTRFS is still green and it’s not considered production ready. Here’s an interesting read about how Synology filled the gaps: https://daltondur.st/syno_btrfs_1/
Oh that’s great to hear. Thank you for sharing.
The most common software choices are TrueNAS and UNRAID.
Depending on your use-case, one is better than the other:
TrueNAS uses ZFS, which is great if you want to be absolutely sure the unreplaceable data on your disks is 100% safe, like your personal photos. UNRAID has a more flexible expansion and more power efficient, but doesn’t prevent any bit flip, which is not really an issue if you only store multimedia for streaming.
If you prefer a hardware solution ready to use, Synology and QNAP are great choices so long you remember to use ZFS (QNAP) or BTRFS (Synology) as filesystem.
Jellyfin needs apps I can install on my parent’s TV, that’s the only thing that keeps me on Plex.
I did the mistake of watching the anime before watching the live action movie, and hated it.