Not sure what your system setup is, but I’ve discovered over the years as we have expanded our system we have had the fastest boot times with a single mix rack and small show files.
Now we run a dual rack(master/slave), Dante network for MEU and recording/playback, it takes almost 4 minutes to boot the surface, even though the racks are up and processing in less than 1 minute.
We did the UPS system for the surface and master rack, it does keep the surface up during a power outage event, but even when the power comes back on, (or us anyway) it still takes 2-3 minutes to re-establish lock links to the slave rack. So it didn’t gain us much, other than power spike protection…. which is still a good thing.