Russ Price <rjp_sun <at> fubegra.net> writes: > > I had recently started setting up a homegrown OpenSolaris NAS with > a large RAIDZ2 pool, and had found its RAIDZ2 performance severely > lacking - more like downright atrocious. As originally set up: > > * Asus M4A785-M motherboard > * Phenom II X2 550 Black CPU > * JMB363-based PCIe X1 SATA card (2 ports) > * SII3132-based PCIe X1 SATA card (2 ports) > * Six on-board SATA ports
Did you enable AHCI mode on _every_ SATA controller? I have the exact opposite experience with 2 of your 3 types of controllers. I have built various ZFS storage servers with 6-12 drives each, using onboard SB600/SB700 and SiI3132 controllers and have always succeeded in getting outstanding I/O throughput by enabling AHCI mode. For example one of my machines gets 400+MB/s sequential read throughput from a 7-drive raidz pool (2 drives on SiI3132, 1 on SiI3124, 4 on onboard SB700). I have never tested the JMB363 though, so maybe it was the culprit in your setup? -mrb _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
