[SAS] Min and Max link speed

Elliott, Robert (Server Storage) Elliott at hp.com
Tue Oct 22 08:25:10 PDT 2002

* From the T10 Reflector (t10 at t10.org), posted by:
* "Elliott, Robert (Server Storage)" <Elliott at hp.com>

> -----Original Message-----
> From: Seto, Pak-lung [mailto:pak-lung.seto at intel.com] 
> Sent: Friday, October 18, 2002 9:40 AM
> To: 't10 at t10.org'
> Subject: [SAS] Min and Max link speed
> * From the T10 Reflector (t10 at t10.org), posted by:
> * "Seto, Pak-lung" <pak-lung.seto at intel.com>
> *
> The SAS specificaiton only allow a PHY to set MIN and MAX 
> link speed.  Is it a requirement by the standard that the PHY 
> must support all defined link speeds in between MIN and MAX 
> link speed?

I think that supporting all the fields in the range is the intent.

How should an expander handle attempted programming outside the 
MIN/MAX range?  

Options are:
* round to minimum or maximum
* return a FUNCTION FAILED response 
* return a new error response code for this field

Rob Elliott, elliott at hp.com
Industry Standard Server Storage Advanced Technology

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