If connected via USB , Is there a max HDD size ?

[nicoff]

Agree on the softeare, e.g. when playing DSD files from the NAS with Foobar on my windows PC I have no problems after enlarging the buffer in Foobar to the max.

Extending the bufferzone in the Lumin might help, but maybe there not enough cache memory for that. Maybe the priority algorithm in the routersoftware could help too, but I have no skills on that.

The fysical capabilites are large enough indeed. With the growing availability of HD files I am puzzled why I am one of the few who hears imperfections.

By the way the only app running on de QNAP is the minimsserver. (apart fromJRE en QNAP SSL cloud) The used storage is 75%.

But often you can hear the raid working.

Most NAS do not have very powerful processors. You are running Foobar in a windows PC that uses a processor that is much faster than the processor in your NAS. That’s why you can run DSD files that are typically more demanding of processing power.

If you install Roon or other music management software in your windows PC, you will be relieving the processor in your NAS from the heavy lifting and you should have no issues streaming your music.