Proposal for IEEE company_id based formats for FC-PH world-wide identifiers
larryc at maxstrat.com
Tue Dec 17 13:00:35 PST 1996
* From the SCSI Reflector (scsi at symbios.com), posted by:
* Larry Chen <larryc at maxstrat.com>
Everything in your proposal and tutorial is great except
there is no way to associate the device server with the node
in the RAID controller/lun case.
I have just two comments:
1. device server should be changed to node.
2. add device server and node association feature.
Identification Descriptor - Association field
2 The Identifier field is associated with the node
that received the request.
Is there room to get these two comments into your work?
On Thu, 12 Dec 96 11:23:28 PST Larry Chen wrote:
>Thanks for your reply. I am extremely pleased to see
>all the hard work being done in this area. Hopefully,
>we can put this baby to rest once and for all.
>You wrote in "Draft tutorial for IEEE company_id based SCSI
>identifiers" that the Fibre Channel login process normally
>provides an identification of the device server and port using
>one of the IEEE Fibre Channel formats.
>I think device server should be replaced with node in the
>Could a RAID controller use the IEEE Registered Extended
>WWN without the Vendor Specified Indentifier Extension
>for its node name in the Fibre Channel login process ?
>I agree that the RAID controller's virtual devices
>should use the IEEE Registered Extension WWN with the
>Vendor Specified Identifier Extension at the SPC level.
>Thanks for your time and consideration in this matter.
>On Thu, 12 Dec 1996 09:57:55 -0800 Bob Snively wrote:
>>>From larryc at maxstrat.com Wed Dec 11 20:59:29 1996
>>>Date: Wed, 11 Dec 96 20:49:12 PST
>>>Subject: RE: Proposal for IEEE company_id based formats for FC-PH world-wide
>>>To: scsi at symbios.com, Bob Snively <bob.snively at Eng>
>>>I believe the SPC/SPC-2 document needs to be changed
>>>to reflect the 128-bit IEEE registered extended format.
>>>Table 113 - Identifier type
>>>4 The identifier field contains a FC-PH
>>> 128-bit Name_Identifier field as defined
>>> in ..... In this case, the identifier length
>>> shall be set to 16.
>>Fortunately, the SCSI definition includes a length field. As a
>>result, you can simply use length field and the identifier of 3
>>to specify that the format is FC-PH, but that the length is 16 bytes.
>>The FC-PH NAA then defines for you the precise format of those
>>The length field is properly defined in the SPC document, but in
>>some parts of the document is mis-named "page length".
>>For reference, see SPC rev 11, page 125, table 109, byte 3.
>Larry Chen Tel: 408.383.1600 (x116)
>Maximum Strategy, Inc. Fax: 408.383.1616
>801 Buckeye Court E-mail: larryc at maxstrat.com
>Milpitas, CA 95035
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