Linux or Windows?

You may also consider database / data source setup in different OS environments.
More common if not popular relational database management systems run on Windows OS, so, we may find that many more applications use these types of databases with Windows OS while setting up database system on Unix flavored OS such as Ubuntu may not be that easy, in addition, Lucee data source setup for such database on a Ubuntu type of OS might not be easy neither.
But if most of your applications do not use some back-end database(s), then that would not be factor to consider.