SFF-8449, SFF-8636 Conference Call Minutes, November 5, 2009
Barry.Olawsky at hp.com
Mon Nov 9 19:04:02 PST 2009
* From the T10 Reflector (t10 at t10.org), posted by:
* "Olawsky, Barry" <Barry.Olawsky at hp.com>
Minutes of SFF-8636, SFF-8449 conference call November 5, 2009
Mr. Min-Jie Chong Agilent Technologies
Mr. Greg McSorley Amphenol
Ms. Rita Horner Avago
Mr. Jim McGrath Cinch
Mr. Mickey Felton EMC
Mr. Doug Wagner FCI
Mr. Elwood Parsons Foxconn Electronics
Mr. Barry Olawsky Hewlett Packard
Mr. Brad Besmer LSI Corp.
Mr. Harvey Newman LSI Corp.
Mr. Tom Palkert Luxtera
Mr. Michael Rost Molex Inc.
Mr. Galen Fromm Molex Inc.
Mr. Jitendra Mohan National Semiconductor
Mr. Bob Clark NetApp
Mr. Tim Simons PMC-Sierra
Mr. Alvin Cox Seagate Technology
Mr. Joel Meyers Tyco Electronics
Mr. Scott Shuey Tyco Electronics
Mr. Larry McMillan Western Digital Technology
Mr. Michael Koffman Western Digital Technology
21 in attendance
Discuss proposed content for SFF-8636 (Common Management Interface) and
SFF-8449 (Mini Multilane Series Management Interface). SFF-8436 (QSFP+ Copper
and Optical Transceiver) is to be used as a basis for SFF-8636.
The discussion began with Barry Olawsky (HP) showing a marked up version of
the SFF-8636 draft presented on October 22. The document included a new
"fixed vs. free" definition based on the SFF-8644 draft. Jim McGrath (Cinch)
commented that the EIA reference probably should be IEC.
After various comments on the SFF-8636 draft, Barry gave a brief presentation
on calculating the propagation delay of copper bulk cable. The data indicated
that twin-axial bulk cable velocity can vary from 90 to 65% of the free space
speed. For active copper cables, this variation can yield a propagation delay
variation over 20ns.
After an active discussion on the analysis, Barry displayed tables of the
first 256 bytes of the memory map. Two of the tables were color coded to
indicate the limited space available within page 00.
The meeting adjourned shortly after 11AM CDT due to a meeting conflict for
several attendees. Barry indicated that he would arrive with a proposal to
alleviate the space constraints at the t10 physical layer meeting on November
Next Meeting: T10 SAS Physical Layer Meeting, November 10
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