Date: Tue, 17 Nov 2009 18:25:37 -0800 From: Artem Belevich <fbsdlist@src.cx> To: Freddie Cash <fjwcash@gmail.com> Cc: FreeBSD Stable <freebsd-stable@freebsd.org> Subject: Re: Support for SAS/SATA non-RAID adapters Message-ID: <ed91d4a80911171825t2117027flafe28bcbf20bdf5a@mail.gmail.com> In-Reply-To: <ed91d4a80911171812j29d6cc9ckbb3af38a4f4b1405@mail.gmail.com> References: <b269bc570911171629l394171dau4acac00383b5e2bc@mail.gmail.com> <ed91d4a80911171812j29d6cc9ckbb3af38a4f4b1405@mail.gmail.com>
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In general, I've found following page very informative about what's availab= le: http://www.hardforums.com/showthread.php?t=3D1413050 I've also tried AOC-SAT2-MV8: http://www.supermicro.com/products/accessories/addon/AOC-SAT2-MV8.cfm It's based on Marvell 88sx8061 chipset. Technically it is supported by FreeBSD, but I'd rather stay away from it at least for now. The main issue is that the largest transfer size is 32K. ZFS does push this card hard and under load this card showed noticeably slower transfer rate than LSI1068 under the same circumstances. Folks on zfs-discuss list also mentioned issues with hot-swap on this card on controller level. The somewhat better news is that NetBSD does seem to have much better driver for this marvell chip. If someone gets to port it to FreeBSD, the card may be pretty decent choice for those who have PCI-X slot on-board. --Artem On Tue, Nov 17, 2009 at 6:12 PM, Artem Belevich <fbsdlist@src.cx> wrote: >> =A0LSI SAS 3080X-R =A0 =A08-port SATA/SATA PCI-X > > This one uses LSI1068 chip which is supported by mpt driver. I'm using > motherboard with an on-board equivalent of this and don't have much to > complain about. I did see some CRC errors with SATA drives in 3Gbps > mode, but those went away after updating firmware to 1.29.0.0. I've > seen some comments on zfs-discuss mailing list that -IR variant of the > firmware (the one that provides RAID0/1 capabilities) does have some > stability issues and recommended going with simpler -IT version (just > pass-through disks). > > --Artem >
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