From owner-freebsd-questions Wed Apr 4 17:22:53 2001 Delivered-To: freebsd-questions@freebsd.org Received: from puke.oem.oemsupport.com (64-42-17-172.atgi.net [64.42.17.172]) by hub.freebsd.org (Postfix) with ESMTP id 416CC37B42C for ; Wed, 4 Apr 2001 17:22:50 -0700 (PDT) (envelope-from pcalkins@oemsupport.com) Received: by puke.oem.oemsupport.com with Internet Mail Service (5.5.2650.21) id <11N9SQTM>; Wed, 4 Apr 2001 17:19:31 -0700 Message-ID: <69DACACD9391054995E110C9B2819CFD0278E7@puke.oem.oemsupport.com> From: Patrick Calkins To: 'Greg Lehey' , "Freebsd-Questions (E-mail)" Subject: RE: RAID Date: Wed, 4 Apr 2001 17:19:31 -0700 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2650.21) Content-Type: text/plain; charset="iso-8859-1" Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Humm.. if the code for RAID is somewhat buggy, I was wondering what the big sites (like Yahoo) use to get around this... I know that Yahoo uses FreeBSD, and with a site as big as theirs I would think loss of data would be a top priority for them, hence the implementation of RAID on those boxes... any comments? -----Original Message----- From: Greg Lehey [mailto:grog@lemis.com] Sent: Tuesday, April 03, 2001 5:18 PM To: Vallo Kallaste Cc: Orville R. Weyrich, JR.; questions@FreeBSD.ORG Subject: Re: RAID On Tuesday, 3 April 2001 at 14:28:12 +0200, Vallo Kallaste wrote: > On Tue, Apr 03, 2001 at 01:16:10AM -0700, "Orville R. Weyrich, JR." wrote: > >> I happen to have come by six identical 4.3 GB SCSI hard drives, and was >> wondering about an inexpensive way to make a FreeBSD server that uses >> them. My manual on FreeBSD covers version 3.2 -- I realize there are >> newer versions, but my search of the FreeBSD web site doesn't turn up my >> answer. >> >> Is there a way to implement RAID-5 with a couple standard SCSI >> controllers (the kind at eBay for under $100) or do I need to buy a >> specialized RAID-5 controller card? >> >> Am I asking for too much? :-) If it isn't too much, where do I go from >> here? > > You can use vinum volume manager, look at > http://www.vinumvm.org/ > > Use recent -stable for implementing vinum and beware that RAID-5 is > considered somewhat buggy, at least that's what I gather from > postings in the lists. A couple of bugs have surfaced in the RAID-5 code recently. I have committed fixes for one, and the other is fixed but not committed. > Use two controllers, three disks each. That depends on the controllers. You could get away with one. Greg -- When replying to this message, please copy the original recipients. If you don't, I may ignore the reply. For more information, see http://www.lemis.com/questions.html Finger grog@lemis.com for PGP public key See complete headers for address and phone numbers To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message