Re: Support for SAS/SATA non-RAID adapters

In general, I've found following page very informative about what's available:
http://www.hardforums.com/showthread.php?t=1413050

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@xxxxxx> wrote:
 LSI SAS 3080X-R    8-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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