On Sat, 22 Dec 2007, Garrett D'Amore wrote:

> Pretty much, I think that is what happens.  I'm assuming that SATA tapes 
> have the same SCSI-based command set, rather than some other type of 
> commands? (The SATA framework is mostly built upon the SCSA framework, 
> such that SATA adapters appear as SCSI HBAs.)

I thought the frameworks created a shim layer between the SATA command set 
and the SCSI-based, but I could be wrong. So, I thought there was a 
different command set on the physical device. I may be wrong on that.

For me, and I haven't done a lot of experimenting, but SCSI is so much 
faster for certain operations on Solaris. Some of my systems have SATA 
that are running in compatibility mode, so that is a bad comparison.

I'm going to try and swap a controller around this coming week, so I can 
move a set of SATA drives to me main workstation at home, it has only SCSI 
in it now, but the SCSI is great to work on. In general I have much better 
experiences with SCSI rather than SATA, although SATA always sounds better 
on paper to me.

> In the event that it requires some effort to do, I'll +1 it as a 
> project.  (I am a CC here.)

It would be nice if we could get someone from the SATA team to join and 
work with the community on this, maybe Steve can help by providing some 
information on the device he has, and put that together with what they may 
know already. From Alan Perry's response, he might be working on SATA also 
these days.

--

Alan DuBoff - Solaris x86 IHV/OEM Group
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