From owner-freebsd-chat Fri May 30 08:38:49 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.5/8.8.5) id IAA21168 for chat-outgoing; Fri, 30 May 1997 08:38:49 -0700 (PDT) Received: from federation.addy.com (federation.addy.com [207.239.68.2]) by hub.freebsd.org (8.8.5/8.8.5) with ESMTP id IAA21163 for ; Fri, 30 May 1997 08:38:47 -0700 (PDT) Received: from slip129-37-112-123.pa.us.ibm.net (slip129-37-112-123.pa.us.ibm.net [129.37.112.123]) by federation.addy.com (8.8.5/8.6.12) with SMTP id LAA02031; Fri, 30 May 1997 11:38:44 -0400 (EDT) Message-Id: <199705301538.LAA02031@federation.addy.com> From: "Francisco Reyes" To: "freebsd-chat@freebsd.org" , "Stephen McKay" Date: Fri, 30 May 97 11:45:53 Reply-To: "Francisco Reyes" Priority: Normal X-Mailer: Francisco Reyes's Registered PMMail 1.9 For OS/2 MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Subject: Re: IDE or Ultra SCSI Sender: owner-chat@freebsd.org X-Loop: FreeBSD.org Precedence: bulk On Fri, 30 May 1997 22:07:35 +1000, Stephen McKay wrote: >On Friday, 30th May 1997, J Wunsch wrote: >Is IDE (in theory) really as good? I understood that only one outstanding >command was possible with IDE, meaning only one disk could be active at >a time, versus many simultaneous commands with SCSI. Am I out of date? >From my understanding IDE can do one command "per channel". So if you have a CDrom and a HD if they are on different channels each can process one command. Check http://sysdoc.pair.com (great hardware technical info). > >So I have to keep telling myself what an investment in brain cells I have >with SCSI, how it always works (well it does for me), and how every IDE >system that I've tried to put 2 disks in, or take one drive out of, has >been such a pain that I've given up. Then I calculate my hourly rate into >the equation... I decided to stay with SCSI, but I am talking to the vendor to see if they can get me plain SCSI (Adaptec 2940 instead of 2940U) and just plain old SCSI-2 drives. If that vendor can't give me a competitive price then I will have to do what I hoped I wouldn't have to do; get the HD subsystem from one vendor, the rest of the system from another and get my hands dirty installing the dam thing (I hate dealing with hardware).