From owner-freebsd-hardware Thu Dec 13 17: 5:15 2001 Delivered-To: freebsd-hardware@freebsd.org Received: from mtiwmhc24.worldnet.att.net (mtiwmhc24.worldnet.att.net [204.127.131.49]) by hub.freebsd.org (Postfix) with ESMTP id 4274E37B41A for ; Thu, 13 Dec 2001 17:04:52 -0800 (PST) Received: from columbia ([12.93.208.99]) by mtiwmhc24.worldnet.att.net (InterMail vM.4.01.03.27 201-229-121-127-20010626) with SMTP id <20011214010451.DMQD13117.mtiwmhc24.worldnet.att.net@columbia>; Fri, 14 Dec 2001 01:04:51 +0000 From: "Andrew C. Hornback" To: "Brett Glass" , Subject: RE: Where to put the CD on an IDE system? Date: Thu, 13 Dec 2001 20:03:06 -0500 Message-ID: <009301c1843b$16f9efa0$6600000a@ach.domain> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook 8.5, Build 4.71.2173.0 X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2919.6600 In-Reply-To: <200112120307.UAA07750@lariat.org> Importance: Normal Sender: owner-freebsd-hardware@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org > -----Original Message----- > From: owner-freebsd-hardware@FreeBSD.ORG > [mailto:owner-freebsd-hardware@FreeBSD.ORG]On Behalf Of Brett Glass > Sent: Tuesday, December 11, 2001 10:07 PM > To: hardware@freebsd.org > Subject: Where to put the CD on an IDE system? > > Yes, I know the purists in the UNIX world favor SCSI -- and I do, too -- > but I'm configuring a system that has IDE/ATAPI and need to figure > out how best to distribute three devices among two IDE interfaces. > > The machine will be a Web proxy. It'll have a system hard drive > (containing the OS and swap) and then a second very large one > to hold the cache. There's also a CD-ROM. > > Which devices should go on which interface for the best > performance, and why? Put the CD-Rom on a chain by itself, and put the two hard drives on a single chain. Why? This generally keeps the I/O stream from slowing down any time that the CD-Rom drive is polled. If the CD-Rom is only going to be used for installing the OS, why not remove it entirely before putting the system into production? That way, you can put each drive on it's own controller, which would maximize your throughput even further. --- Andy To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hardware" in the body of the message