Accredited Standards Committee*
InterNational Committee for Information Technology Standards (INCITS)
Doc. No.: T10/05-335r0
Date: September 12, 2005
Reply to: John Lohmeyer
To: T10 Membership
From: Ralph Weber and John Lohmeyer
Subject: SAS Protocol WG -- September 12, 2005
Vancouver, BC Canada
Agenda
1. Opening Remarks
2. Approval of Agenda
3. Attendance and Membership
4. Old Business
4.1 SAS-2 protocol for changing driver amplitude (03-285r2) [Evans]
4.2 SAS-2 More counters (04-172r1) [Elliott]
4.3 SAS-1.1 revision 9 letter ballot comment resolution as of SAS1R09b
(05-169r4) [Elliott]
4.4 SAS-2 Zoning (05-144r7) [Liao, Gorshe and Grieff]
4.5 SAS 1.1 - Transport layer retry and argument passing fixes (05-143r4)
[Penokie]
4.6 SAS 1.1 SSP Transport Response-DATA ACK Timing Issues (05-225r0)
[Stoops]
4.7 SAS 2.0 Allow Zoning Enhancements to Leave Expanders (05-235r1)
[D'Avignon]
4.8 SAS 2.0 Ensuring Delivery of Broadcasts In Zoned Expanders (05-258r0)
[D'Avignon, Roberts]
5. New Business
5.1 SAS-2, Modifications to 05-167r5, New NOTIFY to indicate imminent
power failure (05-307r0) [Evans]
5.2 SAS-2 Add device name to IDENTIFY address frame (05-309r0) [Elliott]
5.3 SAS-2 STP connection time limits (05-306r0) [Elliott]
5.4 SAS-2 Maximum SMP response time (05-305r0) [Elliott]
5.5 SAS-2 More Phy Test Patterns (04-222r4) [Elliott]
6. Review of Recommendations
7. Meeting Schedule
8. Adjournment
Results of Meeting
1. Opening Remarks
John Lohmeyer called the meeting to order at 9:00 a.m. Monday, September 12,
2005. He thanked Rachelle Trent and Kelly Pollock of PMC-Sierra for hosting
the meeting. As usual, the people present introduced themselves.
2. Approval of Agenda
The draft agenda was approved with the following additions and changes:
5.5 SAS-2 More Phy Test Patterns (04-222r4) [Elliott]
No agenda changes were made during the course of the meeting.
3. Attendance and Membership
Attendance at working group meetings does not count toward minimum attendance
requirements for T10 membership. Working group meetings are open to any person
or organization directly and materially affected by T10's scope of work. The
following people attended the meeting:
Name S Organization
---------------------------------- -- ------------------------------------
Mr. William Lynn P Adaptec, Inc.
Ms. Pat Thaler P Agilent Technologies
Mr. Stillman Gates V Broadcom
Dr. Sagar KenKare V Broadcom Corp.
Mr. Ron Roberts A Broadcom Corp.
Mr. Doug Cole A Dallas Semiconductor
Mr. Kevin Marks P Dell, Inc.
Mr. David Black A EMC Corp.
Mr. Kenneth Hirata A Emulex
Mr. Robert H. Nixon P Emulex
Mr. Ralph O. Weber P ENDL Texas
Mr. Nathan Hastad P General Dynamics
Mr. Rob Elliott P Hewlett Packard Co.
Mr. Steven Fairchild V Hewlett Packard Co.
Mr. Dan Colegrove P Hitachi Global Storage Tech.
Mr. James Rockrohr V IBM
Mr. George O. Penokie P IBM / Tivoli Systems
Mr. Pak Seto V Intel Corp.
Mr. Robert Sheffield P Intel Corp.
Mr. Brad Besmer V LSI Logic Corp.
Mr. Brian Day V LSI Logic Corp.
Mr. Tim Hoglund V LSI Logic Corp.
Mr. Steve Johnson V LSI Logic Corp.
Mr. John Lohmeyer P LSI Logic Corp.
Mr. Avraham Shimor P M-Systems
Mr. Mark Evans P Maxtor Corp.
Mr. Tim Symons P PMC-Sierra
Ms. Rachelle Trent V PMC-Sierra
Dr. Steve Gorshe V PMC-Sierra, Inc.
Mr. Craig W. Carlson A QLogic Corp.
Mr. Greg Elkins V QLogic Corp.
Mr. Gerald Houlder P Seagate Technology
Mr. William Martin P Sierra Logic, Inc.
Mr. Vit Novak P Sun Microsystems, Inc.
Mr. David Allen A Vitesse Semiconductor
Mr. Ed D'Avignon V Vitesse Semiconductor
Mr. Gregory Tabor P Vitesse Semiconductor
Mr. Jeff Williams P Xiotech Corp.
38 People Present
Status Key: P - Principal
A,A# - Alternate
AV - Advisory Member
L - Liaison
V - Visitor
4. Old Business
4.1 SAS-2 protocol for changing driver amplitude (03-285r2) [Evans]
Mark Evans requested that discussion of this topic be deferred to the next
meeting.
4.2 SAS-2 More counters (04-172r1) [Elliott]
Rob Elliott presented a proposal to add counters to the SAS Protocol-Specific
Log Page (04-172r1). The group requested enhancements in the proposal,
including standardized controls over which counters are actively counted and
Rob agreed to prepare a new revision for consideration at the next meeting.
4.3 SAS-1.1 revision 9 letter ballot comment resolution as of SAS1R09b
(05-169r4) [Elliott]
Rob Elliott led a brief discussion of the SAS-1.1 letter ballot comment
resolution. Several editorial problems with cross-references and the like were
raised and Rob agreed to prepare a new revision.
Rob Elliott moved that 05-169r5 (r4 as modified) be recommended as resolving
the SAS-1.1 letter ballot comments and that SAS-1.1 r10 (r9e as modified) be
recommended as incorporating the letter ballot comment resolutions. Mark Evans
seconded the motion. In the absence of any objections, the motion passed
unanimously.
4.4 SAS-2 Zoning (05-144r7) [Symons, Laio and Grieff]
Tim Symons reviewed the minutes of the SAS-2 Zoning teleconference (05-319r0).
Tim Symons presented the revised SAS-2 Zoning proposal (05-144r7). The group
discussed several enhancements to the proposal.
Providing for increases in the number of zones beyond 128 in future SAS-x
versions was discussed. Problems with the configuration change broadcast
mechanism were discussed.
Tim agreed to prepare a revised proposal for consideration at the next
meeting.
4.5 SAS 1.1 - Transport layer retry and argument passing fixes (05-143r4)
[Penokie]
George Penokie and Rob Elliott reported that 05-143r4 had been incorporated in
SAS-1.1 r9e (see agenda item 4.3).
4.6 SAS 1.1 SSP Transport Response-DATA ACK Timing Issues (05-225r0) [Stoops]
George Penokie reported that the issues raised by 05-225r0 are covered in
05-143r4 (see agenda item 4.5).
4.7 SAS 2.0 Allow Zoning Enhancements to Leave Expanders (05-235r1)
[D'Avignon]
Ed D'Avignon asked that this topic be removed from this and future agendas.
4.8 SAS 2.0 Ensuring Delivery of Broadcasts In Zoned Expanders (05-258r0)
[D'Avignon, Roberts]
Ed D'Avignon asked that this topic be removed from this and future agendas.
5. New Business
5.1 SAS-2, Modifications to 05-167r5, New NOTIFY to indicate imminent power
failure (05-307r0) [Evans]
Mark Evans presented a proposal to clarify timing and other issues related to
05-307r0).
Mark Evans moved that 05-307r0 be recommended for inclusion in SAS-2. George
Penokie seconded the motion. In the absence of any objections, the motion
passed unanimously.
5.2 SAS-2 Add device name to IDENTIFY address frame (05-309r0) [Elliott]
Rob Elliott presented a proposal to add device name information to the SAS-2
IDENTIFY address frame (05-309r0). The group discussed initiator device names,
target device names, and several related issues.
Rob agreed to revise the proposal based on the discussion and present the
revision at the next meeting.
5.3 SAS-2 STP connection time limits (05-306r0) [Elliott]
Rob Elliott presented a proposal to add time limits for SAS-to-SATA
connections (05-306r0). The group requested that an Expander function be
defined to set the I_T Nexus Loss time and Rob agreed to revise the proposal.
Concerns were raised about using the term `abort' when describing SATA
actions, because `abort' is a non sequitur in SATA.
Rob stated that the revised proposal will be discussed at the next meeting.
5.4 SAS-2 Maximum SMP response time (05-305r0) [Elliott]
Rob Elliott presented a proposal to define fixed-value timeouts for SMP
responses (05-305r0).
Rob Elliott moved that 05-305r0 be recommended for inclusion in SAS-2. Gregory
Tabor seconded the motion. The motion passed 6:0:11.
5.5 SAS-2 More Phy Test Patterns (04-222r4) [Elliott]
Rob Elliott presented a proposal to add more Phy test patterns (04-222r4).
George Penokie immediately noted that requiring invalid K characters to be
sent is a serious problem and that most disks cannot support it. The group
discussed changes that would make the proposal less objectionable and Rob
agreed to prepare a new revision of the proposal for consideration at the next
meeting.
6. Review of Recommendations
The following recommendation was made regarding the SAS-1.1 Letter Ballot:
05-169r5, sas1r10 (Letter ballot comment resolution) [Elliott]
The following document was recommended for inclusion in SAS-2 during this
meeting:
05-167r5, New NOTIFY to indicate imminent power
failure) [Evans]
05-305r0 (Maximum SMP response time) [Elliott]
7. Meeting Schedule
A SAS Protocol Working Group meeting is scheduled for:
Monday, November 7, 2005 commencing at 9:00 a.m. in Austin, TX at the Diskill
Hotel (512-474-5911) hosted by Dell, Inc.
Teleconference calls will be announced on the T10 reflector as needed.
8. Adjournment
The meeting was adjourned at 5:55 p.m. on Monday September 12, 2005.