From owner-freebsd-hardware Sat Oct 18 14:28:21 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id OAA05359 for hardware-outgoing; Sat, 18 Oct 1997 14:28:21 -0700 (PDT) (envelope-from owner-freebsd-hardware) Received: from isgate.is (isgate.is [193.4.58.51]) by hub.freebsd.org (8.8.7/8.8.7) with ESMTP id OAA05350 for ; Sat, 18 Oct 1997 14:28:16 -0700 (PDT) (envelope-from totii@est.is) Received: from eh.est.is (eh.est.is [194.144.208.34]) by isgate.is (8.7.5-M/) with ESMTP id VAA05452; Sat, 18 Oct 1997 21:27:55 GMT Received: from didda.est.is (totii@ppp-21.est.is [194.144.208.121]) by eh.est.is (8.8.5/8.8.5) with SMTP id VAA15710; Sat, 18 Oct 1997 21:26:16 GMT Message-ID: <344929B6.41C67EA6@est.is> Date: Sat, 18 Oct 1997 21:27:19 +0000 From: =?iso-8859-1?Q?=DEor=F0ur?= Ivarsson X-Mailer: Mozilla 3.01Gold (X11; I; FreeBSD 2.2.2-RELEASE i386) MIME-Version: 1.0 To: mika ruohotie CC: hardware@FreeBSD.ORG Subject: Re: raid References: <199710171352.PAA11906@shadows.aeon.net> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-hardware@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk mika ruohotie wrote: > > uh, is there documentation exactly how much more disk space one > gains when plugging another drive into raid system. > > generally i'm interested in raid5. > > 3 drives is the minimum, right? > > then 4th drive gives the hot spare. how about 5th? 6th? 7th? > > a graph would be nice. > > what about unstandard raid's (6 7 8 9 10, some of those might not even > exist, but i believe i've seen at least 6 7 and 10) > > mickey I installed Mylex EISA raid controllers in two Novell fileservers using 500MB disks serveral years ago. The installation gave me 2GB using 5 disks 2.5GB using 6 disks. The final installation in both cases was using 6 disks and the seventh for online backup. Thordur Ivarsson thivars@est.is