On Fri, 21 May 2010, Don wrote:
You could literally split a sata cable and add in some capacitors for just the cost of the caps themselves. The issue there is whether the caps would present too large a current drain on initial charge up- If they do then you need to add in charge controllers and you've got the same problems as with a LiPo battery- although without the shorter service life.
Electricity does run both directions down a wire and the capacitor would look like a short circuit to the supply when it is first turned on. You would need some circuitry which delays applying power to the drive before the capacitor is sufficiently charged, and some circuitry which shuts off the flow of energy back into the power supply when the power supply shuts off (could be a silicon diode if you don't mind the 0.7 V drop).
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
