It used to be important for me, but as of right now most of my computers are under something, so even though they all have drive activity light -- I can't see them unless I go down and dirty.... 😉
However, the task manager is normally a very reliable substitute. If I see Disk 0 at over 90% that's usually an indication that I need to take some steps to remedy the situation, and if it's at a steady 100%, that means that it might be too late to act and all bets are off. 😐
