Which UPS to choose for your home NAS?

Question

NAS

I collect NAS. Already decided on the entire configuration, including the PSU (Sea Sonic Electronics G-360). The OS will be nas4free.
I suffer with the choice of UPS. Two requirements
haunt 1. The above PSU is APFC. You need to choose a "compatible" UPS.
2. Nas4Free must understand USB UPS. In particular, be able to process the signal that the power has gone from the batteries and the NAS should shut down correctly.
Comrades, who, relying on their experience, can advise a number of models that meet these requirements?
Overclocker.ru was advised to look towards the FSP manufacturer as the most "compatible" with Sea Sonic. But I don't know if nas4free understands this manufacturer's UPS via USB. Yes, and the reviews are very peculiar (stinks, noisy).

Answer 1

100% compatibility can only be seen in the HCL of the "manufacturer"
wiki.nas4free.org/doku.php?id=nas4free_users_hardware
there are no such :-(
Many models are launched, in principle all APCs should work (there are drivers for nut, though there is some kind of nut in freenas ... wrong, IMHO ) But no one will give you a guarantee that it will work for you.