March 13, 1989 The SCSI-2 CAM (Common Access Method) Committee of March 8 was hosted by Quantum at the Sheraton Silicon Valley in Milpitas. The following attendees were present: M. Aarons EMULEX G. Milligan CDC IMPRIMIS D. Adams ADAPTEC R. Morin CANTA FORDA COMP LABS D. Allan ENDL T. Murray NCR D. Anderson SUN MICROSYSTEMS K. Paige ZENITH J. Armstrong NCR R. Perry SEAGATE C. Ballard BALLARD SYNERGY B. Phillips APPLITECH J. Chen BUSTEK J. Polonsky SMS R. Clewett SUN MICROSYSTEMS T. Putnam OPTOTECH M. Dawson NCR T. Reichert INTERACTIVE SYSTEMS G. Dronek VULCAN LABS R. Reid SMS C. Fleckenstein NCR C. Rhea AT&T J. Fobel RANCHO TECHNOLOGY L. Robinson STORAGE DIMENSIONS J. Greenlaw VERBATIM R. Roybal OLIVETTI J. Hamada MITSUBISHI ELECT R. Salgari OLIVETTI W. Hansen OLIVETTI S. Shah WESTERN DIGITAL R. Hoehnle SEAGATE T. Shea ADAPTEC B. Homans LMS TSD D. Skinner NCR W. Ihde LMS OSD G. Slaughter SUN MICROSYSTEMS A. Jardetzky OLIVETTI S. Smyers AMD M. Jerbic HEWLETT PACKARD R. Snively ADAPTEC J. Kahn SUN MICROSYSTEMS G. Stephens IBM J. Katzung APPLE R. Tewell COLUMBIA DATA T. Lee OLIVETTI T. Treadway DPT C. Linsley SMS D. Trupski OLIVETTI J. Lohmeyer NCR N. Uyehara ZENITH P. Manley SYQUEST TECHNOLOGY J. Webb SYTRON G. Marazas IBM R. Wheeler SYSGEN P. Matteucci ADAPTEC Two meetings were held in conjunction with the CAM Committee. Tracy Murray's small meeting to cover OS/2 OSD concepts wound up attracting 23 attendees on the previous afternoon. At this session, the considerations of booting under OS/2 occupied much time, in addition to how SIM (SCSI Interface Modules) would be supported in ROM, RAM or in an ABIOS. A representative of Microsoft attended and provided recommendations. The most active debate of the day took place over the meeting schedule. By tying the CAM Committee to the SCSI activities, we are on a 2/6 split every two months. The new schedule calls for tying the CAM Committee to the SCSI Working Group and scheduling the other meeting two weeks before the plenary. A chorus of non-West Coast attendees called for the next meeting to be held at a hub, and Denver was the preferred site. Next on the most active list was the discussion over how the layers of the CAM should be portrayed. Clint Ballard and Mike Jerbic both offered their versions before Tracy Murray and Rick Tewell took the floor to explain the events of the OS/2 pre-meeting, where the Thing was introduced. The Thing is an entity which contains the OSD, Boot and Transport functions. Clint Ballard Diagram of CAM Functions Mike Jerbic Block Diagram of Model Tracy Murray Summary of OS/2 Pre-Meeting and the "Thing" Rick Tewell Explanation behind choice of the "Thing" Rich Moren Unix Security Jerry Armstrong CHS Algorithm Jerry Katzung Description of current Mac-SCSI Implementation Rich Moren presented his views on Unix security, a factor that will need to be considered in the OSD for Unix. Jerry Armstrong proposed two best-fit algorithms for CHS to relative address translation. The one adopted was not the most efficient but it did allow disks of up to 460 MB capacity to be supported with only 15 head addresses. Jerry Katzung described how Apple's present implementation of device drivers and the SCSI Manager work. It was not presented as a model to emulate (as it requires the device drivers to manage SCSI phases), but because there was interest the Apple implementation. After all, the largest installed base of SCSI products is on Apple systems. A post-meeting on extensions to the de facto interface for AT-bus disk controllers was held the following day at Quantum's facility. A full set of minutes prepared by Jim McGrath are attached. The next meeting is scheduled for April 13 in Denver, and provision has been made for a post-meeting on the 14th (nothing yet scheduled for it). The pre- meetings are difficult for some to attend. It has been suggested that we hold post-meetings. NOTE: The SCSI BBS (316-636-8700), Area 13 is the clearing house between members working on proposals. Proposals etc will be in the Files section and short exchanges are in the Message section. Future Meetings: 3/30/89 Milpitas AT-Bus WG @ Sheraton Quantum 408-943-0600 4/13/89 Denver Sheraton Airport Hotel No Host 303-333-7711 5/10/89 Wichita Hilton Hotel NCR 313-686-7131 6/ 8/89 Cupertino Cupertino Inn Ballard 408-996-7700 I. Dal Allan