From owner-freebsd-stable@FreeBSD.ORG  Wed Feb 21 09:17:14 2007
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Date: Wed, 21 Feb 2007 20:16:45 +1100 (EST)
From: Ian Smith <smithi@nimnet.asn.au>
To: Alan Amesbury <amesbury@umn.edu>
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Cc: freebsd-stable@freebsd.org, Ivan Voras <ivoras@fer.hr>
Subject: Re: getting garbage faster using FreeBSD?
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On Tue, 20 Feb 2007, Alan Amesbury wrote:

 > Ivan Voras wrote:
 > 
 > > The obvious question - why don't you burn the tapes and hammer the disks? :)
 > 
 > Ah, low-tech.  I know it well.  Still, the last time I did any data
 > destruction, I found a 4 Tesla magnet does wonders.  Downsides:
 > 
 > 	1) Oxford's 90cm bore, helium-cooled magnets aren't that
 > 	   common, perhaps because a 2000V/500A power source
 > 	   is a bit expensive (solution doesn't scale).
 > 
 > 	2) The hard drive has a tendency to fly out of one's
 > 	   hands while moving it through the lines of force
 > 	   (solution requires some physical coordination).
 > 
 > 
 > It's primarily for item #1 that I hadn't mentioned this earlier, as most
 > readers of -STABLE users are probably looking for a more scalable solution.

Scaleable?  Easy ..

For 2.5" drives, a tack hammer does nicely.
For 3.5" to 5" drives, a claw hammer suffices.
For 14"? IBM disk packs a small sledge is optimal (if short of tanks!)

Cheers, Ian