From owner-freebsd-questions Fri Feb 19 15:13:15 1999 Delivered-To: freebsd-questions@freebsd.org Received: from allegro.lemis.com (allegro.lemis.com [192.109.197.134]) by hub.freebsd.org (Postfix) with ESMTP id D82EC11450 for ; Fri, 19 Feb 1999 15:13:09 -0800 (PST) (envelope-from grog@freebie.lemis.com) Received: from freebie.lemis.com (freebie.lemis.com [192.109.197.137]) by allegro.lemis.com (8.9.1/8.9.0) with ESMTP id JAA29651; Sat, 20 Feb 1999 09:43:07 +1030 (CST) Received: (from grog@localhost) by freebie.lemis.com (8.9.3/8.9.0) id JAA18174; Sat, 20 Feb 1999 09:43:05 +1030 (CST) Message-ID: <19990220094304.G93492@lemis.com> Date: Sat, 20 Feb 1999 09:43:04 +1030 From: Greg Lehey To: Glenn Johnson Cc: questions@FreeBSD.ORG Subject: Re: advice on setting up a Vinum volume References: <19990201232551.A8463@gforce.johnson.home> <19990202162645.W76680@freebie.lemis.com> <19990202114815.A90204@symbion.srrc.usda.gov> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.93.2i In-Reply-To: <19990202114815.A90204@symbion.srrc.usda.gov>; from Glenn Johnson on Tue, Feb 02, 1999 at 11:48:15AM -0600 WWW-Home-Page: http://www.lemis.com/~grog Organization: LEMIS, PO Box 460, Echunga SA 5153, Australia Phone: +61-8-8388-8286 Fax: +61-8-8388-8725 Mobile: +61-41-739-7062 Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Tuesday, 2 February 1999 at 11:48:15 -0600, Glenn Johnson wrote: > On Tue, Feb 02, 1999 at 04:26:45PM +1030, Greg Lehey wrote: >> On Monday, 1 February 1999 at 23:25:52 -0600, Glenn Johnson wrote: >>> I am getting a new ultra SCSI disk. I don't have it yet but it will be >>> something between 4 and 4.5 GB. I currently have a WDC AC21600H, 1549MB >>> drive. I will be making the SCSI disk my primary disk and was trying to >>> think of ways to use my existing IDE drive. What I was thinking was to >>> take 1549MB from the SCSI disk and make a Vinum striped volume with it >>> and the IDE drive. Does any one have a feel for what the performance of >>> that setup would be? >> >> As long as you have only one drive per IDE controller, and if you can >> use DMA, performance should be acceptable. It depends a lot on how >> you set up Vinum, of course. > > Thanks. > > I will have the IDE drive on the first channel of the controller with an > ATAPI CDROM drive on the other channel. I hope I have the terminology > right. So, the IDE hard drive will be wd0, and the CDROM will be > wd2. The hard drive is capable of DMA. > > When you say performance should be acceptable, does that imply that > performance would be better if I didn't use a Vinum striped volume? No, striping will not make much difference in this case, since you won't have multiple concurrent accesses. > I was considering using the striped volume for /usr/obj and > /usr/ports. Why do you want two file systems? You're just asking to run out of space in one and have space left over in the other. Greg -- When replying to this message, please copy the original recipients. For more information, see http://www.lemis.com/questions.html See complete headers for address, home page and phone numbers finger grog@lemis.com for PGP public key To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message