From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?iso-8859-1?Q?Bj=F6rn_Kirchner?= Subject: Re: How fast should my hard disk go? Date: Thu, 17 Jul 2003 13:42:28 +0200 Sender: linux-admin-owner@vger.kernel.org Message-ID: <005c01c34c58$7fce37c0$5001a8c0@bkirchner> References: <1058440083.10502.47.camel@Zebra.vil.ite.mee.com> Mime-Version: 1.0 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: List-Id: Content-Type: text/plain; charset="iso-8859-1" To: Paul Furness , linux-admin@vger.kernel.org Hello Paul, > I have a 133 speed hard disk connected to a 133 controller. I believe > that this should mean that I get a maximum transfer rate of 133 MB/se= c? 133 MB/sec is the theoretical maximum of the IDE bus. You won't reach it with one harddisk. I would even say you won't ever reach 133 MB/sec. > The disk has an 8M cache on it, which is also supposed to make it > faster. So why am I getting speeds of just under 50MB/sec? Is this > correct (because the max transfer is only in one direction or > something), or am I missing an obvious setting? > 47 MB/sec is a very good value for an IDE hard disk, I think. The 133 MB/sec of the controller is only to run multiple hard disk on t= he same controller without slowing down the harddisk because the controlle= r isn't capable of the sumarized speed of the connected hard disks. I don't think you can speed up your harddisk much more. Bye, Bj=F6rn - To unsubscribe from this list: send the line "unsubscribe linux-admin" = in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html