datab
Theoretically, support for that could be coming… Emby (where Jellyfin is based on) always used their own layer for interacting with a SQLite database. All that custom made logic is currently being swapped out for EF Core. EF Core is a DotNet library for interacting with databases and EFCore that also supports MySQL, PostgreSQL, SQL Server besides SQLite.
So my guess is that, once all that work is completed, support of other database can be added.
For a little bit of context. I am currently running Jellyfin on Btrfs and there is quite a performance impact due to CoW. If 2 clients decide to browse the libraries, both clients grind to a near standstill with regards to being able to see things. So I am following this work with quite some interest.
I am currently rocking a Shanling M2X which I bought secondhand for €75,- from the local classified ad websites.
Officially supports up the 512Gb but according some reviews it can do up to 2Tb microSD cards ( https://headfonics.com/shanling-m2x-review/ ). I currently have a music collection of about the same size. The Shanling M2X can drive all the IEMs I throw at it, has enough file system support to read just about anything and has WiFi and Bluetooth. Although the WiFi can only be used to wirelessly sync files (which can be a pro but also a con, depending on how you look at it).
However if you don’t feel like going secondhand, Shanling offers a whole bunch of devices meant for offline playback of local files.