Date: Wed, 3 May 2000 11:03:28 +0930 From: Greg Lehey <grog@lemis.com> To: Marius Vincent <mvincent@elcb.co.za> Cc: webmaster@wmptl.com, freeBSD-Questions <freebsd-questions@FreeBSD.ORG> Subject: Re: vinum Message-ID: <20000503110328.F1654@freebie.lemis.com> In-Reply-To: <NEBBJNFFELDAHIBIGIAMOEMBCBAA.mvincent@elcb.co.za> References: <390EDC99.A77180C7@wmptl.com> <NEBBJNFFELDAHIBIGIAMOEMBCBAA.mvincent@elcb.co.za>
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On Tuesday, 2 May 2000 at 16:08:31 +0200, Marius Vincent wrote: > Nathan Vidican wrote: >> Marius Vincent wrote: >>> Has anyone used vinum before?? >>> Please let me know where I can find more help about starting off with >>> vinum. >>> I want to purchase an identical IDE secondary drive to my primary >>> sothat I can mirror the two of them. >>> Any way I must startoff with vinum?? >> >> I'm trying to do much the same as you are. We're attempting to setup >> FreeBSD boxes with mirrored drives for speed/redundancy, yet we do not >> want to pay for a hardware raid. Vinum/CCD is what you're looking for, >> try a 'man ccd', and a 'man ccdconfig' they'll tell you how to >> accomplish the task. They tell you how to use ccd. They don't tell you how to use vinum. Do a "man -a vinum" for that. >> Please note though, that you cannot mirror / (the root), nor can >> you mirror a partition that you would boot from. I reccomend >> getting a smaller (500megs or so) hardisk and putting the identical >> drives to be mirrored into primary/slave, and secondary/master. > > Well actually you can software mirror a complete phisical disk, > INCLUDING "/". The mirroring sofware writes in raw format.It > reproduces block for block on drives. Well, maybe you'd like to explain how to do it. In particular, how are you going to get the bootstrap to recognize it? > ONLY RAID5 and so on cannot be software mirrored,because you have to > bring up your operating software first and then bringup your > software raid package.This will in turn activate the raid devices.If > you run hardware raid like Clarion. The operating system thinks you > only have 1 phisical disk and has absolutely nothing to do with raid > at all. Precisely. What's the name of the boot partition? > The point being that you can indeed sofware raid a complete phisical > disk.(Even microcrap can do this with standard NT4.0). > > Thanx for the help.I must not f*ck around on my mailbox with this. > Tell me how safe is this program to use if you have no idea what you > are doing? You can shoot yourself in the foot with either ccd or Vinum. ccd will also crash if you lose a drive, while Vinum will carry on running. Vinum offers a lot more functionality than ccd. Greg -- When replying to this message, please copy the original recipients. 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
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