On Tue, 26 Jan 2010, F. Wessels wrote:
The "green" drives with their lower spindle speeds reduces this effect.
I don't agree that lowering the spindle speed necessarily reduces resonance. Reducing resonance is accomplished by assuring that chassis components do not resonate (produce standing waves) at a harmonic of the frequency that the rotating media produces. Adjusting the size, length, and weight of chassis components to avoid the harmonics aleviates the problem. A chassis designed for high-speed drives may not do so well with slow-speed drives, and vice-versa.
Anyone who has played with audio frequency sweeps and a large subwoofer soon becomes familiar with resonance and that the lower frequencies often cause more problems than the higher ones.
Bob -- Bob Friesenhahn bfrie...@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer, http://www.GraphicsMagick.org/ _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
