On Mon, 16 Jul 2012, Stefan Ring wrote:
I wouldn't expect mirrored read to be faster than single-disk read, because the individual disks would need to read small chunks of data with holes in-between. Regardless of the holes being read or not, the disk will spin at the same speed.
It is normal for reads from mirrors to be faster than for a single disk because reads can be scheduled from either disk, with different I/Os being handled in parallel.
Bob -- Bob Friesenhahn bfrie...@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer, http://www.GraphicsMagick.org/ _______________________________________________ zfs-discuss mailing list email@example.com http://mail.opensolaris.org/mailman/listinfo/zfs-discuss