From owner-freebsd-hardware Wed Aug 30 06:25:03 1995 Return-Path: hardware-owner Received: (from majordom@localhost) by freefall.FreeBSD.org (8.6.11/8.6.6) id GAA00729 for hardware-outgoing; Wed, 30 Aug 1995 06:25:03 -0700 Received: from yarrina.connect.com.au (yarrina.connect.com.au [192.189.54.17]) by freefall.FreeBSD.org (8.6.11/8.6.6) with ESMTP id GAA00715 for ; Wed, 30 Aug 1995 06:24:55 -0700 Received: from frisbee.damp.apana.org.au (frisbee.damp.apana.org.au [203.2.134.193]) by yarrina.connect.com.au with ESMTP id XAA06035 (8.6.12/IDA-1.6 for ); Wed, 30 Aug 1995 23:24:42 +1000 Received: (from dpeters@localhost) by frisbee.damp.apana.org.au (8.6.12/8.6.8) id WAA03023 for hardware@freebsd.org; Wed, 30 Aug 1995 22:56:06 +0930 From: David Peters Message-Id: <199508301326.WAA03023@frisbee.damp.apana.org.au> Subject: Wangdat 3400DX and NCR SCSI woes To: hardware@freebsd.org Date: Wed, 30 Aug 1995 22:56:06 +1030 (CST) X-Mailer: ELM [version 2.4 PL21] Content-Type: text Content-Length: 1282 Sender: hardware-owner@freebsd.org Precedence: bulk Hi, I've got a Wangdat 3400DX hanging off a NCR 53C810-based SCSI controller. Performance sucks. This isn't a FreeBSD-specific problem; it causes problems booting (which is talking via the BIOS) as well. (Although we haven't actually tried under other operating systems) Once the system is up, throughput is around 2-3M/minute. For what it's worth, we have the jumper diagram out of the service manual; there's nothing of significance that we can find - termination options, SCSI 1/2 select, compression enable/disable. Cabling and termination isn't much of an option for problems either; the DAT has been swapped in in place of a disk (performance of the disks without the DAT is good) and performs equally badly there or in its normal external casing. We've also run the unit on an Ultrastor 34F. This boots fine, but performance is just as bad. The questions: - Is there anyone out there using one of these in a similar configuration with good results? - Does anyone know what the dipswitches 5,6,7 & 8 do? - Any ideas? Please? Mike Smith, per -- David Peters Email: dpeters@damp.apana.org.au Adelaide Hills, South Australia http://www.damp.apana.org.au/~dpeters "blublbulabah blubahahilibalba" - Kaboobi, Shazzam.