Hi, the question is which WD Green drives you are using. WDxxEADS or WDxxEARS. The WDxxEARS have a 4k physical sector size instead of 512B. You need some special trickery to get the max performance out of them, probably even more so in a raidz configuration.
See http://www.solarismen.de/archives/4-Solaris-and-the-new-4K-Sector-Disks-e.g.-WDxxEARS-Part-1.html and the following parts. Regards, Christian -- This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss