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Date: Fri, 21 Sep 2007 13:14:25 +0200 (CEST)
From: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl>
To: Subhro Kar <subhro.kar@gmail.com>
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Cc: dhaneshk k <dhaneshkk@hotmail.com>, freebsd-questions@freebsd.org
Subject: Re: Cheaper backup mechnism for a server
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>
> Hello DharneshK,
>
> You can try to create a Mirror using RAID. You can either create a
> software or a hardware (recommended) managed Mirror. In case of a disk

both are software. while the "software" one you talking about is gmirror - 
very portable and easy to use contrary to BIOS-based "hardware" one.

and with gmirror is very easy to take whole disk snapshot