I disagree. Servers should be run on a UPS. RoonServer is, in essence, a database server using leveldb. And, yes, it should have utilities to have a graceful shutdown when connected to a UPS via USB.
This is also one of the reasons I run Roon on Windows, so I can run UPS monitoring software and have things shut down gracefully. (In addition to being able to run hardware diagnostics / preventative maintenance). Haven’t had corruption in 6 years.
There is a linux utility called apcupsd which would do the job if it was loaded on RoonOS. But, I’m not sure on the licensing on that software. Perhaps, this should be a Feature Request.