It sounds like the Shanling M0 fits your bill: https://en.shanling.com/product/222

I've used it for over a year and love it. It also works as a USB and Bluetooth DAC, so you get a nice little 3 in 1 tool.

Over $3,000?!

went to check: ~ 100euros

worth 5 clicks

rsync.net is awesome. You get a Linux filesystem you can access via SSH. Many tools support it (like git-annex), and since it's ssh-able, you can script anything that doesn't work out of the box.

They also have optional replication, and you can choose the location of both of the servers that host your files. Great support from actual engineers, used by huge companies for their offsite backups, and never been breached (to my knowledge).

EDIT: their features page is a good read. https://www.rsync.net/cloudstorage.html

Sounds very enticing, however $25/m for 1 TB seems rather pricey. Is replication that x2, or is it included?

I'm not the GP. There's a slightly cheaper "borg backup" plan at rsync.net.

[1]: https://www.rsync.net/products/borg.html