From owner-freebsd-questions Thu Aug 19 16: 3:55 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 41DEC14E9B for ; Thu, 19 Aug 1999 16:03:48 -0700 (PDT) (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 IAA25267; Fri, 20 Aug 1999 08:31:49 +0930 (CST) Received: (from grog@localhost) by freebie.lemis.com (8.9.3/8.9.0) id IAA61037; Fri, 20 Aug 1999 08:31:47 +0930 (CST) Date: Fri, 20 Aug 1999 08:31:47 +0930 From: Greg Lehey To: Glenn Johnson Cc: freebsd-questions@FreeBSD.ORG Subject: Re: concatenated drives with vinum or ccd Message-ID: <19990820083147.Y14964@freebie.lemis.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.95.4i In-Reply-To: ; from Glenn Johnson on Thu, Aug 19, 1999 at 10:10:44AM -0500 WWW-Home-Page: http://www.lemis.com/~grog X-PGP-Fingerprint: 6B 7B C3 8C 61 CD 54 AF 13 24 52 F8 6D A4 95 EF 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 Thursday, 19 August 1999 at 10:10:44 -0500, Glenn Johnson wrote: > I have a couple of questions regarding ccd and vinum. I have used both on > different machines so configuration is not a problem. Yay! > > Is there any benefit to using vinum instead of ccd for concatenated > drives? As long as you're using simple concatenated drives, probably not. But with vinum you can change your config on the fly (like adding mirroring while the volume is running). It's basically more flexible. > An extension to this, should I bother changing a fairly large ccd > volume into a vinum volume? Not necessarily, if it's just concatenated. If it's mirrored, you'll see better performance out of Vinum, because it reads alternately from each half of the mirror. ccd always reads from the first half. > Is there a benfit to using ccd over vinum? Not really. I believe ccd will give you more space: Vinum uses 131.5 kB of each drive for configuration information. > Also, is vinum slated to replace ccd? I'd like to think so, but it's not my decision. 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