SAS: Fwd: questions about wide port

shogo hamasaku hamasaku at d1.hw.necst.nec.co.jp
Tue Jul 23 05:41:18 PDT 2002


* From the T10 Reflector (t10 at t10.org), posted by:
* shogo hamasaku <hamasaku at d1.hw.necst.nec.co.jp>
*
This is multipart message.

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Content-Type: text/plain; charset=us-ascii

Hello,
I'm sorry that I didn't show that is for SAS spec.

--- forwarded message -------------
From: shogo hamasaku
Date: Tue, 23 Jul 2002 17:23:05 +0900
To:   t10 at t10.org
Cc:   
---
> Hello,
> I have some questions about wide port connection. I appreciate if 
> someone gives me the answer.
> 
> I attached the file shows a connection for my question.
> 
> Q1. Is this connection allowed?
> If yes, I have some additional questions.
> 
> For example, the write command progresses as followings, and my 
> questions are in 4..
> 
> 1. Initiator device opens the target device.
>      The link via Physical Link A-1 through Physical Link B will be 
>      established.
> 2. Target device issues XFER_RDY.
>      It goes through Physical Link B to Physical Link A-1.
> 3. Initiator device sends data.
>      It goes through Physical Link A-1 to Physical Link B.
> 4. Initiator device opens the same target device.
>  Q2. Is it allowed to send OPEN through A-2 while the connection 
>      via Physical Link A-1 through Physical Link B is already 
>      established?
>  Q3. If allowed, (1) Does the expander device transfer the Open to 
>      Physical Link B after waiting for the close of current connection?
>      or (2) Does the expander device send OPEN REJECT? or (3) Does the 
>      expander device recognize the link is currently connected and send 
>      OPEN ACCEPT?
> 
> -----------------------------------------------------------
> Shogo Hamasaku          hamasaku at d1.hw.necst.nec.co.jp

--- forwarded message end ---------

-----------------------------------------------------------
Shogo Hamasaku          hamasaku at d1.hw.necst.nec.co.jp


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