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Re: ata(4) and NCQ

On Tue, Apr 26, 2011 at 09:05:14PM +0200, Manuel Bouyer wrote:
> On Tue, Apr 26, 2011 at 11:52:00AM -0700, Garrett Cooper wrote:
> > [...]
> > I've been watching this discussion and one hing i was curious about was -- 
> > is it widely known that there are a handful of ATA <-> SCSI specs that have 
> > been released by IEEE over the past decade. I figured someone was aware of 
> > this on the list, but was kind of puzzled by the replies about FreeBSD, 
> > Linux and windows behavior when in fact the behavior is allowed and 
> > standard.
> Can you gives pointers about this ? AFAIK ata is still something
> different from SAM or SPC.

T10 has a "SCSI / ATA Translation (SAT)" standard.
It covers how to translate/encapsulate ATA commands for SCSI.
It's often implemented in many newer USB Mass Storage Class SATA bridges.

        Jonathan Kollasch

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