Currently, my photo computer (late 2012 Mac Mini) is downstairs and attached to a external drive set up as RAID 1 (mirrored) that has all my LR photos. The computer communicates with my home network either via wifi or ethernet via a power line adapter which is slow. I also have a Drobo FS connected to the router upstairs but is very very slow to access and read/write to. I didn't know that Drobo's have a reputation for being very slow. In fact, when I set up LR to import and back up a 2nd copy to the Drobo upstairs via wifi or powerline, the function often fails as it is too slow.
My question is if I get a Synology NAS, could speeds improve? Do others use a NAS via wifi within the same home to back up their photos? I could easily get a larger thunderbolt or USB3 external drive but would like others in the family to have access to storage as well. The NAS would be for the rare instance that my RAID I drive would fail, not to retrieve on a daily basis and back up speeds in general aren't an issue if the initial LR import and back up to a NAS would work.