I think a NAS is fine when you lock it down to sleep when it's not being used. Sure, means you have to wait for it to wake up every time you want to use it, but

I think a NAS is fine when you lock it down to sleep when it's not being used. Sure, means you have to wait for it to wake up every time you want to use it, but I mostly use mine (a 4 bay Synology) to back up photos (raws) from a camera so I only need access sparingly.