Safe to leave Android TV box permanently on?

If this is the wrong place to ask I honestly apologize in advance. But as per the topic is it safe to leave my box on all the time…or at least most of the time? I have my HDD plugged into it and then use it as a upnp server, which works surprisingly well. However I was not 100% sure about it being on so much so I can access it from other devices anytime.

Thanks.

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