On Wed, May 26, 2010 at 5:47 PM, Brandon High <bh...@freaks.com> wrote:
> On Sat, May 15, 2010 at 4:01 AM, Marc Bevand <m.bev...@gmail.com> wrote: > > I have done quite some research over the past few years on the best (ie. > > simple, robust, inexpensive, and performant) SATA/SAS controllers for > ZFS. > > I've spent some time looking at the capabilities of a few controllers > based on the questions about the SiI3124 and PMP support. > > According to the docs, the Marvell 88SX6081 driver doesn't support NCQ > or PMP, though the card does. While I'm not really performance bound > on my system, I imagine NCQ would help performance a bit, at least for > scrubs or resilvers. Even more so because I'm using the slow WD10EADS > drives. > > This raises the question of whether a SAS controller supports NCQ for > sata drives. Would an LSI 1068e based controller? What about a LSI > 2008 based card? > > If that is the chip on the AOC-SAT2-MV8 then i'm pretty sure it does suppoer NCQ I'm also pretty sure the LSI supports NCQ I'm not 100% sure though
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