From owner-freebsd-hardware Fri Aug 2 13:10:05 1996 Return-Path: owner-hardware Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id NAA26986 for hardware-outgoing; Fri, 2 Aug 1996 13:10:05 -0700 (PDT) Received: from saguaro.flyingfox.com (saguaro.flyingfox.com [204.188.109.253]) by freefall.freebsd.org (8.7.5/8.7.3) with SMTP id NAA26954 for ; Fri, 2 Aug 1996 13:10:00 -0700 (PDT) Received: (from jas@localhost) by saguaro.flyingfox.com (8.6.12/8.6.10) id NAA14408 for freebsd-hardware@freebsd.org; Fri, 2 Aug 1996 13:09:41 -0700 Date: Fri, 2 Aug 1996 13:09:41 -0700 From: Jim Shankland Message-Id: <199608022009.NAA14408@saguaro.flyingfox.com> To: freebsd-hardware@freebsd.org Subject: h/w requirements for CD-R writing? Sender: owner-hardware@freebsd.org X-Loop: FreeBSD.org Precedence: bulk Can anyone lend any insight on this question: Is a single NCR53C810 SCSI host adapter sufficient for CD-ROM writing, or will I need a second SCSI host adapter, so that one reads the disk while the other writes the CD-ROM? I understand that there are real-time constraints when writing CD-R's, but on the other hand, they're only writing at 300 KB/s, and they have 1 or 2 MB of cache .... The tentative plan is to dedicate an old 66 MHz Pentium box with an NCR53C810 on the motherboard, with a 1.3 GB SCSI-2 HP disk (4KRPM, 13.5 ms average access, ca. 2 MB/s sustained transfer rate), plus a CD-writer to be determined, to this task. Is this likely to work? Jim Shankland Flying Fox Computer Systems, Inc.