Ports and Interfaces > USB

What is UASP for mass storage?

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Jan Axelson:
Most current USB mass storage devices use the bulk-only protocol. The protocol requires each SCSI command to complete before the host can issue the next command.

UASP, or USB Attached SCSI Protocol is more efficient because it allows multiple, concurrent commands.

The UASP specification is available here:

http://www.usb.org/developers/devclass_docs

The USB Attached SCSI (UAS) transport protocol specification is available here:

http://www.t10.org/drafts.htm#SCSI3_UAS

Jan

sainfedl:
I am looking for Linux support of UASP.
could you point me to few sites treating the subject matter in a Linux context?
Thank you

Best regards

Jean-Pierre Sainfeld

Jan Axelson:
Here is a discussion about it:

http://kerneltrap.org/mailarchive/linux-usb/2010/4/1/6259877/thread

Jan

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