Does not spinning down drives improve their life?
I have a 21.5" iMac that I never let sleep because of the long-time belief that desktop hard drives are most reliable when spinning 24/7, and that spin-up/spin-down cycles caused by sleeping or shutdowns stresses them and causes them to break. Is that still true for modern drives? Are the so-called "green" drives, seemingly designed to frequently stop/start what with their automatic sleep modes, hardened against this stress? By contrast, laptop drives are expected to be frequently spun up/down and so are specifically designed to handle it.