Security Protocol Out/Request volume Element Address
James.C.Hatfield at seagate.com
James.C.Hatfield at seagate.com
Thu Mar 30 14:14:38 PST 2006
* From the T10 Reflector (t10 at t10.org), posted by:
* James.C.Hatfield at seagate.com
*
Specifically, the 12-byte CDB was required to allow ATAPI devices to use
the new security commands.
Thank You !!!
-----------------------------------------------------------------
Jim Hatfield
Seagate Technology LLC
e-mail: James.C.Hatfield at seagate.com
s-mail: 389 Disc Drive; Longmont, CO 80503 USA
voice: 720-684-2120
fax....: 720-684-2711
==========================================
Steven Sletten
<Steven.Sletten at s
un.com> To
Sent by: Ralph Weber <roweber at IEEE.org>
owner-t10 at t10.org cc
No Phone Info t10 at t10.org
Available Subject
Re: Security Protocol Out/Request
volume Element Address
03/30/2006 02:13
PM
* From the T10 Reflector (t10 at t10.org), posted by:
* Steven Sletten <Steven.Sletten at Sun.COM>
*
A 12 byte CDB was a requirement for the security commands. This was for
compatibility with ATA. I think Ralph made the best possible compromise
here. The CAP and requesters of the commands felt that we could work
around the slight overlap.
Regards,
Steve
Ralph Weber wrote:
> * From the T10 Reflector (t10 at t10.org), posted by:
> * Ralph Weber <roweber at ieee.org>
> *
> I had thought the best possible compromise had been applied
> in the selection of the Security Protocol Out command operation
> code. The current choice is not the first mistake I have ever
> made, nor will it be the last.
>
> I am certain CAP will give proper consideration to any written
> proposal to change the operation code. A few cautionary notes
> seem worthwhile.
>
> Every revision of SPC contains a table listing operation codes
> in numerical order. It is a virtual certainty that CAP will
> consult this table when considering operation code assignment
> requests.
>
> The operation code for a command whose CDB length is 12 bytes
> (such as Security Protocol Out) must be between A0h and BFh.
>
> Happy hunting!
>
> .Ralph
>
> David Peterson wrote:
>
>> I agree with Kevin, assuming an SMC device will not use Security
>> Protocol Out is a bad assumption...Dave
>> (no disclaimer)
>>
>>
>>
>> ------------------------------------------------------------------------
>> *From:* owner-t10 at t10.org [mailto:owner-t10 at t10.org] *On Behalf Of
>> *Kevin D Butt
>> *Sent:* Wednesday, March 29, 2006 12:54 PM
>> *To:* t10 at t10.org
>> *Subject:* Security Protocol Out/Request volume Element Address
>>
>>
>> I just noticed that the new Security Protocol Out command collides
>> with the op code for an SMC device (Request Volume Element
>> Address). I thought a free op code was requested. This means
>> that Automation devices will never be able to use any of the
>> security protocols. I think this is a bad idea. I don't know
>> where how all the library vendors missed this. Can this be changed?
>>
>> Thanks,
>>
>> Kevin D. Butt
>> SCSI & Fibre Channel Architect, Tape Firmware
>> MS 6TYA, 9000 S. Rita Rd., Tucson, AZ 85744
>> Tel: 520-799-2869 / 520-799-5280
>> Fax: 520-799-2723 (T/L:321)
>> Email address: kdbutt at us.ibm.com
>> http://www-03.ibm.com/servers/storage/
>
>
> *
> * For T10 Reflector information, send a message with
> * 'info t10' (no quotes) in the message body to majordomo at t10.org
*
* For T10 Reflector information, send a message with
* 'info t10' (no quotes) in the message body to majordomo at t10.org
*
* For T10 Reflector information, send a message with
* 'info t10' (no quotes) in the message body to majordomo at t10.org
More information about the T10
mailing list