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Date:      Thu, 12 Sep 2002 08:54:53 +1000
From:      Tony Landells <ahl@austclear.com.au>
To:        "Brian M. Kincaid" <bmk@adsl-64-174-159-18.dsl.sntc01.pacbell.net>
Cc:        freebsd-questions@FreeBSD.ORG
Subject:   Re: Backups on IDE disks 
Message-ID:  <200209112254.IAA13879@tungsten.austclear.com.au>
In-Reply-To: Message from "Brian M. Kincaid" <bmk@adsl-64-174-159-18.dsl.sntc01.pacbell.net>  of "Wed, 11 Sep 2002 13:04:19 MST." <200209112004.g8BK4JtZ001693@adsl-64-174-159-18.dsl.sntc01.pacbell.net> 

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Hi Brian,

Backing up to a hard disk is very cool and convenient and, as you
point out, not really that expensive.  And with the HUGE capacity
you can do complete backups of your system each time instead of
doing incrementals most of the time so you can leave it unattended
and be confident it will fit on a CD.

The problem is that all the time the hard disk is in your computer,
it is susceptible to the following problems:

	disaster (your house burns down)

	power spikes (which could cause the heads to scratch the disk,
	meaning the only chance of ever getting data off it again is
	to send it to an expensive data recovery service)

	malice (someone doesn't like you so they scribble on the backups)

	accident (someone mistypes something and ends up scribbling
	on your backups)

Just make sure you're safe from the things that you want to be safe from;
that's all I'm saying.  If you can afford for your last backup to be
slightly out of date (i.e. to the last time you took a disk out), and
you think the chances of the above are small enough, then go for it
and enjoy the convenience!

Tony
-- 
Tony Landells						<ahl@austclear.com.au>
Principal Networks, Security & IT Systems Engineer	Ph:  +61 3 9677 9319
Australian Clearing Services Pty Ltd			Fax: +61 3 9677 9355
Level 4, Rialto North Tower
525 Collins Street
Melbourne VIC 3000
Australia



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