Suggestions on hardware that meet minimum requirements. I know NUC/ROCK is one option. DAS/NAS with Roon Server installed using a Docker app might also work.
According to your posting history it seems you already own(ed) a ROCK and also already asked about NAS’. What is it that you still need so you can finally decide what you want?
No longer have the ROCK. Never setup a NAS. According to the database Roon can be installed on Synology, Asustor,QNAP, Unraid and Truenas. Unraid on a Linkstation N1or N2 seems like a good candidate.
I have Roon running also on a Mac mini M4. It runs very smooth (16GB, 512 SSD) Have a library of over 100000 songs (only local) stored on a satachi hub with 4TB ssd and an external 4TB ssd on usb4. Why change a winning team? I love this combo. It has so much power and so less power consumption. It’s for me a winner and here to stay for ever. If there comes a m5 I’m buying one and use the m4 only for Roon and some downloading.