From: Jeff Garzik <redacted>
Date: Fri, 15 Jun 2007 17:50:50 -0400

FWIW that's why libata followed the path it did:  faking SCSI required 
the least amount of code for the maximal amount of existing storage 
driver and platform installer support.

Well, that and the fact that ATAPI is really SCSI, but that's offtopic 
for this thread.  :)

Yep I absolutely understand that, and for my case as well it's
nearly always SCSI underneath that's why you can send SCSI
commands passthru to the virtual disk server if you like.