Re: [usb-storage] USB storage devices and SAT

[Matthew Dharm <mdharm-scsi@xxxxxxxxxxxxxxxxxx>]

On Sun, Aug 03, 2008 at 08:33:13PM -0500, James Bottomley wrote:
> On Mon, 2008-08-04 at 03:10 +0200, Douglas Gilbert wrote:
> > USB storage devices that support SAT (the T10 SCSI to ATA
> > translation standard) are beginning to appear.
> 
> Um, confused.  The USB devices that were ATA under the covers already
> have to do SAT since the USB storage transport mandates SCSI.

The enclosures today translate a small subset set of SCSI commands to
ATA/ATAPI commands.

SAT would allow arbitrary ATA commands to be sent to target devices.  In
theory.  I've only seen a few products that support ATA passthrough, and
they all did it in a vendor-proprietary manner.

Matt

-- 
Matthew Dharm                              Home: mdharm-usb@xxxxxxxxxxxxxxxxxx 
Maintainer, Linux USB Mass Storage Driver

I could always suspend a few hundred accounts and watch what happens.
					-- Tanya
User Friendly, 7/31/1998

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