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- Newsgroups: comp.sys.sun.hardware
- Path: sparky!uunet!psinntp!ptsys1!dlt
- From: dlt@pt.com (Don Turrell)
- Subject: Re: SBus Fast SCSI-2 Card Question...
- Message-ID: <1992Nov8.141548.3515@pt.com>
- Organization: Performance Technologies, Incorporated
- References: <1992Nov5.134137.13487@emr1.emr.ca>
- Date: Sun, 8 Nov 1992 14:15:48 GMT
- Lines: 42
-
- In article <1992Nov5.134137.13487@emr1.emr.ca> craven@cg.emr.ca writes:
- >I am looking into getting the Fast SCSI-2 card, but I have some
- >conflicting info on whether system requirements include SunOS4.1.3?
- >Will it work, perhaps only at 5 MB/s, with 4.1.2? Can someone set me
- >straight on this? Any experiences with this card would also be
- >appreciated.
- >
- >Jim
- >---
-
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-
- Jim
-
- Not sure what SCSI-2 SBus module you are refering to here. However
- my company has been supplying add-in SCSI-2 SBus products for over
- a year and we have seen most of the issues at one time or another.
- There is really no issue with OS 4.1.2 or 4.1.3 with our products
- (there maybe with Sun's recent SCSI-2 SBus product release). The
- real issues have to do with drives (as you might expect some of
- the new FAST drives perform better than others), single ended vs
- differential operation (the traditional single-ended works well with
- one or two drives on the SCSI-2 bus... beyond this number consider
- differential) and good attention to cable and termination details
- (the SCSI-2 bus timing is much more critical than the slower SCSI-1).
-
- You can see some impressive performance improvements in many
- applications by adding a SCSI-2 SBus interface and a SCSI-2
- FAST disk to SPARCstations. But as noted above the OS is not
- the area where you need to pay attention to details...at least
- not with our products. Be happy to forward you info on SCSI-2 SBus
- modules and a recent write-up we completed for our users on specific
- details that apply to operating reliability with SCSI-2 FAST.
-
-
- Don Turrell
- Performance Technologies, Inc.
- 315 Science Pkwy, Rochester, New York 14620 USA
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- | Internet: dlt@pt.com | Phone: 716-256-0200 (Work) |
- | uucp: ...!uupsi!ptsys1!dlt | FAX: 716-256-0791 |
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