Quote:
Originally Posted by Mustang
I leave it running and should the power fail in the middle of the night, I wont know about it until the morning. Hence I am not likely to be able to do a controlled shut down in time. During the day I can realistically do with about 5-10 mins max.
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A quality UPS will generate a warning signal saying that mains power has gone, which suitably-equipped devices can use so they know to shut themselves down gracefully while there's still time.
Whether your NAS is capable of this, or can be shut down under the control of a computer on the network which understands the signal, is a different question, but it might be worth digging through the documentation to see if it gives you any ideas.