Thanks, no problem.
I am pretty happy with my new Synology 1522+ which can be finagled to support SMB 1, and is powerful enough to run Roon on, giving me the best of both worlds.
Having said that, with most recent Windows 10 updates you will now have to jump through hoops to get your PC to connect to Drobo, but it should be doable (and you’d need that to actually move music files to it), but getting Rose to see it should be easy.
It is unfortunate that Rose haven’t updated the firmware to support recommended SMB versions, but honestly Rose’s support for large libraries in general is suboptimal anyway.
Since you want to connect a NAS to the Rose anyway, as soon as you get the power supply for the Drobo, assuming it works, you should be able to copy some music files to it, using either Windows or Mac computer, and Rose will be able to scan it, once you create a share using Drobo’s control panel app.
However, since you plug it into Mac Mini with a USB cable, I assume that you have either ethernet or a strong enough WiFi where the Rose is. I would suggest plugging ethernet into Rose directly, then finding it in your Roon Core audio configuration and enabling it. Then you should be able to stream anything from your collection through Roon.That’s what I do, unless I really want to play the couple of DSD512 files I have, even though I could also use Rose to browse the Synology directly. Roon makes it so much easier…
Good luck with the new power supply though. Fior what it’s worth my Drobo-FS is probably 11+ years old now, and still going strong even if semi-retired with the Synology taking its place. If anything, you could use it as a secondary backup…