Question about Set Streaming Command

XinLi at XinLi at
Wed Sep 26 18:35:37 PDT 2001

* From the T10 Reflector (t10 at, posted by:
* XinLi at

Hi, Keiji-san,

Thank you very much for your reply.

As per the document, there may be several performance segments or
performance extent  on one media? If there is any limit to the number of
performance extents on one media?

Thank you very much,

Xin Li
Oak Technology,  Inc.
139 Kifer Court, Sunnyvale, CA 94086
Phone:(408)616-6127  Fax:(408)523-6524
Email: XinLi at

                    keiji_katata at post.pio                                                                       
                             To:     XinLi at                                      
                    Sent by:                     cc:     t10 at, mtfuji5 at                   
                    owner-mtfuji5 at avc-pio        Subject:     Re: Question about Set Streaming Command          
                    09/25/2001 06:38 PM                                                                         
                    Please respond to                                                                           

Hi Xin,

Would you refer to This file
has example of performance descriptor.
To control the Write speed, in my understanding, most inner portion (LBA=0)
data transfer rate and rotation control is used. (Sometimes, BUFE bit in
write parameter mode page is referred.) Because spindle motor rotation
speed makes limit of data transfer rate.

Usually, Read Speed is controled by drive automatically. So I think setting
read speed does not so much meaning and highest or equal to write speed may
be used.


Keiji Katata

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