Accredited Standards Committee
X3, Information Processing Systems
                                                 Doc. No.: X3T10/96-206r0
                                                     Date: July, 16 1996
                                                  Project:
                                                Ref. Doc.:
                                                 Reply to: G. Penokie

To:       Membership of X3T10

From:     George Penokie / Ralph Weber

Subject:  Minutes of X3T10 SCC Study Group Meeting -July 16, 1996



AGENDA

1. Opening Remarks
2. Attendance and Membership
3. Approval of Agenda
4. Report on status of the SCC-2 project proposal
5. SCC-2 proposals (96-164r1)
6. Simplification of SCAL configurations (96-196r0)
7. Action Items
8. Meeting Schedule
9. Adjournment

Results of Meeting

1.      Opening Remarks

George Penokie convened the meeting at 9:00 am, Tuesday, July 16, 1996.
He thanked John Lohmeyer of Symbios Logic for hosting the meeting.

This is a joint meeting of the X3T10 SCSI Controller Commands working
group, the RAB Host Interface working group, and the DMTF disk subgroup,
mass storage working committee.  The purpose of the group is to deal with
interface issues related to using RAIDs.  The study group will assess the
issues and then formulate a strategy for dealing with them.

As is customary, the people attending introduced themselves.  A copy of the
attendance list was circulated for attendance and corrections.

It was stated that the meeting had been authorized by X3T10 and would be
conducted under the X3 rules.  Working group meetings take no final
actions, but prepare recommendations for approval by the X3T10 task group.
The voting rules for the meeting are those of the parent committee, X3T10.
These rules are:  one vote per company; and any participating company
member may vote.

The minutes of this meeting will be posted to the SCSI BBS and the SCSI
Reflector and will be included in the next committee mailing.

2.      Attendance and Membership

Attendance at working group meetings does not count toward minimum
attendance requirements for X3T10 membership.  Working group meetings are
open to any person or company to attend and to express their opinion on the
subjects being discussed.

RAID Study Group Meeting Attendees

Attendee          Company             Email Address
----------------  ------------------  -------------------------------
A. Taylor         Adaptec             ataylor@corp.adaptec.com
Eddy Quicksall    Adaptec             edyq@btc.adaptec.com
John Horvath      Adaptec             johnho@btc.adaptec.com
Terry Braun       Adaptec             tbraun@corp.adaptec.com
Paul Massiglia    DEC                 massiglia@genral.enet.dec.com
Dal Allan         ENDL                dal_allen@micmail.com
Bill Hutchison    HP                  hutch@boi.hp.com
George Penokie    IBM                 gop@rchvmp3.vnet.ibm.com
Corky Ball        JMR Electronics     corky@jmr.com
Janakiraman Gopalan Mylex/Buslogic    janakig@mylex.com
Mark Evans        Quantum Corporation mevans@qntm.com
Bob Snively       Sun Microsystems    bob.snively@sun.com
Rick Wagner       Stream Logic        richard_wagner@streamlogic.com
Ray Jantz         Symbios Logic       ray.jantz@symbios.com
Rod DeKoning      Symbios Logic       rod.dekoning@symbios.com
Ralph Weber       Symbios Logic       ralph.weber@symbios.com
Joe Molina        Technology Forums   tforums@ic.manicato.mn.us
Dave Wehrman      Unisys              75122,177@compuserve.com
Ed Barnes         Xyratex             edbarnes@primenet.com
Herb Silverman    Xyratex             herb@cerf.net


3.       Approval of Agenda

The agenda presented at the meeting was approved.

4.      Report on status of the SCC-2 standard

The SCC-2 project proposal(96-152r0) was accepted by X3T10.

5.      SCC-2 proposals (96-164r1)

George reviewed the SCC-2 proposals (96-164r1) and distributed marked-up
pages showing changes from SCC.  Some questions were raised regarding the
definition of P+S redundancy groups.  The group discussed the  definition
"fractionally exposed".  Concerns were raised about representing the
exchange of controllers providing access to volume  sets.  It was noted
that the proposed definition of the ENABLE RANGE field does not define the
normal case as 00b.

6.      Simplification of SACL configurations (96-196r0)

George described his simplification of the SCC command structure
(96-196r0).  The simplified construction of volume sets from physical
device capacity provoked a lengthy discussion.  The proposal expressed
usage in terms of percentage of the volume set.  A counter proposal
suggested using percentage of the device.  Details of the counter proposal
were discussed but not fully resolved.

The group also discussed how to simplify configuration.  George supported
developing an intermediate configuation command structure, with a high-
level configuration structure above it and the current detail configuration
command structure below it.

7.      Action Items

-Add into the SCC-2 the proposals agreed to by the working group - George
Penokie (DONE)

8.      Meeting Schedule

The next meeting will be hosted by DEC in Natick, MA at the Crowne Plaza
on September 10 9:00AM to Noon.

9.      Adjournment

The meeting was adjourned at 12 noon.
