x 2, I received all of those error messages until I turned sleep mode off. Once I did, have not had a single issue since. So yes, my drive runs all of the time, and I feel it often for heat, and have not noticed any excessive heat issues. I know this is not the optimal situation, however, I am not about to power on and off over and over again just to be able to use the drive as it is a pain in the reat, plus, doing so is not great for the drive either. Until E* figures out a firmware upgrade to wake the FA drive from sleep mode, I will keep that mode shut off.
Mine doesn't stay on all the time. I have it connected to the switched outlet on my A/V receiver so it's only on when my TV is.
NightRyder