From owner-freebsd-scsi Thu Oct 11 14: 9:58 2001 Delivered-To: freebsd-scsi@freebsd.org Received: from as.astro.su.se (as.astro.su.se [130.237.166.29]) by hub.freebsd.org (Postfix) with SMTP id A909B37B405 for ; Thu, 11 Oct 2001 14:09:54 -0700 (PDT) Received: (qmail 1138 invoked by alias); 11 Oct 2001 21:09:53 -0000 Received: (qmail 1127 invoked from network); 11 Oct 2001 21:09:52 -0000 Received: from dioscuri.astro.su.se (130.237.166.114) by as.astro.su.se with SMTP; 11 Oct 2001 21:09:52 -0000 Received: (from alex@localhost) by dioscuri.astro.su.se (8.9.1b+Sun/8.9.1) id XAA21830; Thu, 11 Oct 2001 23:09:49 +0200 (MET DST) Date: Thu, 11 Oct 2001 23:09:49 +0200 (MET DST) From: Alexey Koptsevich To: Scott Long Cc: scsi@freebsd.org Subject: Re: one array from both channels in Adaptec 3210S? In-Reply-To: <20011011123557.A406@hollin.btc.adaptec.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-scsi@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org > Yes it is. You cannot, however, create and array that spans multiple > adapters. That would be too much! :) > It follows the law of dimishing returns. Every disk that you add will > increase performance my a lower factor than the previous. You also > have to remember that performace is also based on the PCI bus and > the CPU on the controller. If the card is only in a PCI 33MHz/32Bit > slot, you can only get 132MB/s max (actually much less than that in > real life). And what is the throughput of 66MHz/32bit PCI on my Intel L440GX+ motherboard? > > Also, I guess there are no SCSI 320 RAID controllers? > > Coming soon.... Are there some announcements? Thanks, Alex To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message