After following this topic the last days, and nearly everybody contributed to it, I think it's time to add a new factor.
Vibration. First some prove how sensitive modern drives are: http://blogs.sun.com/brendan/entry/unusual_disk_latency Most "enterprise" drives also contain circuitry to handle the vibration resulting from multi drives setups. Resonance for example is avoided by adjusting the spindle speed. Enterprise chassis with drive sleds contain mechanical dampening. In a typical soho case all drives are screwed to a shared chasis. The vibration problem is much worse in such a setup. The "green" drives with their lower spindle speeds reduces this effect. Personally I've good experience with the WD RE2 1TB green drives. I've an 8 drive pool with these and till today saw no problems. On another system with 6 seagate consumer drives I've lost already two drives. Both running 24/7 for almost two years. I would like thank the people who brought it under my attention the TLER and idle timeout CAN be configured on some drives. Although I'm only interested in these options when they survive a power cycle. Yes the enterprise drives are expensive, but so is my time and data. Regards, Frederik -- This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
