As someone who inherited 240 24/7 running WD-Greens: http://idle3-tools.sourceforge.net/ http://idle3-tools.sourceforge.net/ works fine but disabling the timer

As someone who inherited 240 24/7 running WD-Greens: http://idle3-tools.sourceforge.net/ http://idle3-tools.sourceforge.net/ works fine but disabling the timer has negative performance impact. 3000 seconds is fine through. But you need a complete powercycle before the changes take effect. No more parking. Does make a difference in longevity in my not very scientific opinion. I can second the 200> bad blocks. Sometimes they still work fine after using badblocks -w a few times on them and raising the timer.