Le 06/02/2004 23:46, « Daniel Brieck » <djbrieck at mac.com> a écrit : > I wonder how significant the reduction of the life of the > Drive is by spinning up and down every few minutes. This frequent spin > up, spin down is promoted in mac os 10.2 and 10.3's Energy Saver > System preference, hence the name "Put the hard disk(s) to sleep when (snip) *** It does. I've had 2 disks going bad because of spinning up and down every so often. Like Anne said, what you gain by putting it to sleep is noise reduction. On the other hand, and I know it's not accessible to everybody, but putting the fans on 5V and the HD on a peace of foam instead of screwing it directly to the chassis has done more to quit the Mac's than sleep mode. The here Mac's are on 24/24 except for the screen. They do automatic rsync backups to the Linux servers or batch encode photos/movies, I use them as a HiFi and, least important, I always have the latest mail waiting for me in the Inbox when I go sit behind it. So, unless your Mac is in the same room you're sleeping in I'd leave them on and the screen in 1h sleep mode. The fact is the electrical and mechanical stress at wake up wears the components. You would care less if it was a PC because the update cycle is faster bu the story is different with Mac's. Zoran. -- Cheers, Zoran. If C lets you shoot yourself in the foot, C++ lets you blow your whole leg off. -- Bjarne Stroustrup