Take that with a pinch of salt, the cycle scare reached FUD levels of paranoia. In my case as a desktop storage drive I use every day, the count is 88,817 - in 735,9 days of Power On Time, which comes to a little over 2 years non-stop. Hardly drive-breaking.
Well, i started with 6 WD20EARS. I am down to 2. They got replaced over time by WD20EARX from RMA. I also replaced one WD20EARX due RMA.
My Greens and reds (cycles/hours) :
WD20EARX (Green) - 71834/12074, 6572/4298, 34867/7215, 56511/12034, 67043/12136, 52303/8591
WD20EARS (Green) - 73492/14028, 156826/19464
WD30EFRX (Red) - 12/3032, 12/3032, 1/603, 1/603 (yes, 12 and 1 load cycles for each pair of 3TB Reds)
And these drives weren't even accessed frequently, usually only for 2-3 hours per day (and of course not all of them), so those load/unload cycles are rather high. If i would have these drives in RAID or as a primary data drive, then i would have much, much higher load counts on those Greens.