ReadyNAS UPS compatibility and configuration

We do support USB UPS, but the UPS must have a USB port, we don't support serial to USB.

There are multiple factors that may affect compatibility and there's far too many UPS models out there for us to maintain a compatibility list.

APC is a brand that on the whole is very likely to be compatible.

If you're wanting to test a shutdown what you can do is e.g. power down the NAS, connect the power of the NAS directly to the wall outlet.

Turn the NAS back on and unplug the UPS from the wall outlet. If things are working the NAS should be shutdown by the UPS when the threshold is reached.

The NAS doesn't need long at all to shutdown.

NUT is included in the GPL

The version of NUT included is shown in packages.log as well.

You can even share the UPS using NUT with other devices (e.g a second NAS) but if you do that the other devices and your router/switch would need to also be on the UPS so that the network is still up for the other devices (e.g. a second NAS) to be shutdown safely. The router/switch could be left to power off when the battery runs out.

Using a UPS is great, but there are still things that can go wrong e.g. the UPS battery failing (should be much less often than power outages though). If the NAS is used for primary storage of important data you should backup the NAS regularly.