From owner-freebsd-hackers Thu Oct 29 09:06:31 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id JAA17326 for freebsd-hackers-outgoing; Thu, 29 Oct 1998 09:06:31 -0800 (PST) (envelope-from owner-freebsd-hackers@FreeBSD.ORG) Received: from sasami.jurai.net (sasami.jurai.net [207.153.65.3]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id JAA17312 for ; Thu, 29 Oct 1998 09:06:29 -0800 (PST) (envelope-from winter@jurai.net) Received: from localhost (winter@localhost) by sasami.jurai.net (8.8.8/8.8.7) with SMTP id MAA28395; Thu, 29 Oct 1998 12:06:16 -0500 (EST) Date: Thu, 29 Oct 1998 12:06:15 -0500 (EST) From: "Matthew N. Dodd" To: Karl Denninger cc: Hallam Oaks , "hackers@FreeBSD.ORG" Subject: Re: Multi-terabyte disk farm In-Reply-To: <19981029105943.A27659@Denninger.Net> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Thu, 29 Oct 1998, Karl Denninger wrote: > > You'd proably only see it in RAID5 mode or if you were -really- beating on > > your array. Still, with that much memory they should make # of tags > > supported a tunable. > > We beat the SHIT out of our arrays, and the big NFS servers run in RAID 5 > mode :-) But how busy is the controller? 50%? More? David G. would probably have more information on the CMD's low performance modes. (Or rather modes where the limited number of taged commands begins to impose limits on I/O) > > I really want to find a cheap CRD-5440 just for kicks. 1 host and 2 disk > > channels is just right for a small server. > > Yep. Actually, the 5440 has 4 channels :-) ~$2500 or so. Ya, reading skills help. $2500 is still a bit out of my price range for home use. Maybe when I can second hand them in a few years. :) -- | Matthew N. Dodd | 78 280Z | 75 164E | 84 245DL | FreeBSD/NetBSD/Sprite/VMS | | winter@jurai.net | This Space For Rent | ix86,sparc,m68k,pmax,vax | | http://www.jurai.net/~winter | Are you k-rad elite enough for my webpage? | To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message