SCSI Multi-Port Unit

Kevin D Butt kdbutt at us.ibm.com
Fri Apr 5 15:00:26 PST 2002


* From the T10 Reflector (t10 at t10.org), posted by:
* "Kevin D Butt" <kdbutt at us.ibm.com>
*

Guy,

Have you set the MultiP bit (bit4 byte6) of standard INQUIRY?

>From SPC-2 Standard INQUIRY description:
A Multi Port (MULTIP) bit of one indicates that this is a multi-port (two
or more ports) device and conforms to the
SCSI multi-port device requirements found in the applicable standards
(e.g., SAM-2, a protocol standard and
possibly provisions of a command set standard). A value of zero indicates
that this device has a single port and
does not implement the multi-port requirements.

Regards,

Kevin D. Butt



                                                                                                                                   
                      "Guy Messalem"                                                                                               
                      <gmessalem at cloverle        To:       <t10 at t10.org>                                                           
                      afcomm.com>                cc:                                                                               
                      Sent by:                   Subject:  SCSI Multi-Port Unit                                                    
                      owner-t10 at t10.org                                                                                            
                                                                                                                                   
                                                                                                                                   
                      04/05/2002 10:47 AM                                                                                          
                                                                                                                                   
                                                                                                                                   



* From the T10 Reflector (t10 at t10.org), posted by:
* "Guy Messalem" <gmessalem at cloverleafcomm.com>
*
Hi,

I'm trying to develop a working FC multi-port target device. To be concise,
I'd like to get an Initiator to see the SCSI target device LUN as dual
ported. Both SAM-2 and SPC-3 contain some directions but they don't seem to
do the trick. Looking at multi-ported RAIDs and how they do it, I've come
to understand that vendors use specific pages and parameters to convince an
Initiator of their Multi-Port abilities.

Is this documented anywhere?

Thanks,

-Guy.


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