I say leave 'em on.
I leave the NAS on all of the time. Since it's a RAID 50, it takes a while to check completely.
Just make sure that the temp is handled adequately.
Servers and NAS are on 24/7 here.
I had to Google to find out what 'NAS' was.
Seems I have one of those .....and I now leave it on 24/7
Glad you could add a "word of the day," or acronym of the day, as the case might be.
Here you thought that all we did was sit around, arguing over wheter Fosters was worse than Rolling Rock, eating yoodles and talking about F1 racing.
PS, I had to Google "yoodles," earlier on. We did not have those in Mississippi.