SAS address in SAS-r03

[George Penokie]

* From the T10 Reflector (t10 at t10.org), posted by:
* George Penokie <gop at us.ibm.com>
*




Dennis,

Actually a disk will have four WWIDs; one for each port, one for the target
device, and one for the logical unit.
An expander port in not a SCSI port and does not have it's own WWID. An
expander device only has one WWID (unless it contains targets or initiators
that is).

Bye for now,
George Penokie

Dept 2C6  114-2 N212
E-Mail:    gop at us.ibm.com
Internal:  553-5208
External: 507-253-5208   FAX: 507-253-2880




                                                                                                                                 
                      "Dennis Moore"                                                                                             
                      <dmoore at ix.netcom        To:       <t10 at t10.org>                                                           
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                      Sent by:                 Subject:  SAS address in SAS-r03                                                  
                      owner-t10 at t10.org                                                                                          
                                                                                                                                 
                                                                                                                                 
                      12/03/2002 04:32                                                                                           
                      PM                                                                                                         
                                                                                                                                 
                                                                                                                                 




In clause 4.2.1 it states that world wide names are unique for devices AND
ports within the transport protocol. I interpret this to mean a disk with
two ports will have three WWNs. One for the device and one for each of its
ports.
In clause 4.6.2 third paragraph it states that in an expander there can be
an expander device and within it three ports all sharing the same WWN.
Is my interpretation correct?
If so, isn't 4.6.2 a contradiction of 4.2.1?
Thanks.
dmoore at ix.netcom.com



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