From owner-freebsd-hardware Thu Oct 9 23:32:11 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id XAA27815 for hardware-outgoing; Thu, 9 Oct 1997 23:32:11 -0700 (PDT) (envelope-from owner-freebsd-hardware) Received: from palrel3.hp.com (palrel3.hp.com [156.153.255.219]) by hub.freebsd.org (8.8.7/8.8.7) with ESMTP id XAA27810 for ; Thu, 9 Oct 1997 23:32:10 -0700 (PDT) (envelope-from darrylo@mina.sr.hp.com) Received: from srmail.sr.hp.com (srmail.sr.hp.com [15.4.45.14]) by palrel3.hp.com (8.8.5/8.8.5tis) with ESMTP id XAA15430 for ; Thu, 9 Oct 1997 23:32:05 -0700 (PDT) Received: from mina.sr.hp.com by srmail.sr.hp.com with ESMTP (1.37.109.16/15.5+ECS 3.3) id AA084425124; Thu, 9 Oct 1997 23:32:04 -0700 Received: from mina.sr.hp.com by mina.sr.hp.com with SMTP (1.37.109.16/15.5+ECS 3.3) id AA100695123; Thu, 9 Oct 1997 23:32:03 -0700 Message-Id: <199710100632.AA100695123@mina.sr.hp.com> To: hardware@FreeBSD.ORG Subject: Re: Assembling new machine Reply-To: darrylo@sr.hp.com In-Reply-To: Your message of "Thu, 09 Oct 1997 07:25:16 +0200." <19971009072516.54187@keltia.freenix.fr> Mime-Version: 1.0 (generated by tm-edit 7.106) Content-Type: text/plain; charset=US-ASCII Date: Thu, 09 Oct 1997 23:32:02 -0700 From: Darryl Okahata Sender: owner-freebsd-hardware@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk Ollivier Robert wrote: > If you don't need a 7200 rpm drive, IBM has several good drives at 5400 > rpm. They run slower but also cooler than 7200 ones. I have a DORS-32160 (2 > GB) and a DCAS-34330W (4 GB) and they run fine. Both are Ultra and the > 34330W is of course also wide. Let me second the recommendation for the IBM 5400RPM DCAS 34330. Although it's only a 5400 RPM drive, it's relatively fast -- comparable to my old Quantum Atlas I's, which are 7200RPM drives. The IBM is also a *lot* quieter and a *lot* cooler. The 4GB version is also pretty inexpensive at $399 (http://www.basoncomputer.com), although this is for a bare drive *without* instructions (you can get the basic information off a sticker on the drive, or you can go to IBM's web site for detailed drive information). [ A couple of months back, I asked here for recommendations for quiet drives, and the IBM was what I got based upon the responses. The IBM's a very nice drive, but it's pretty hard to find. ] Here are some bonnie results, based upon 2.2.1, a P133, NCR810, 64MB RAM, & 4GB drives: -------Sequential Output-------- ---Sequential Input-- --Random-- -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks--- Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU IBM DCAS 256 4777 91.3 5550 21.7 1891 12.2 5066 92.6 6274 25.1 74.8 3.1 Atlas I 256 3350 66.8 3387 14.8 2027 15.9 4671 90.0 6065 24.6 87.5 4.1 Both of these tests were done with the drives over 3/4s full, so these numbers reflect measurements on the inner tracks. IOZONE numbers (256MB file, inner tracks): IBM DCAS: 5641066 bytes/second for writing the file 6355852 bytes/second for reading the file Quantum Atlas I: 3464032 bytes/second for writing the file 6176476 bytes/second for reading the file -- Darryl Okahata Internet: darrylo@sr.hp.com DISCLAIMER: this message is the author's personal opinion and does not constitute the support, opinion, or policy of Hewlett-Packard, or of the little green men that have been following him all day.