[LINK] Guidelines for Digital Repositories, Canberra, 27 July
kim at holburn.net
Fri Jul 21 15:21:37 AEST 2006
On 2006 Jul 21, at 3:07 PM, Karl Auer wrote:
> On Fri, 2006-07-21 at 14:29 +1000, Markus Buchhorn wrote:
>> Regarding bit-rot, you can avoid that by reducing your compression
>> ratio a bit, by including full error-correction information
> Um, it's VERY expensive if the data is voluminous. So expensive
> that it
> is almost always cheaper to compress the hell out of stuff, store it
> multiple times, protect it well, then keep recopying it and
> checking it
> against itself. That is basically what biological systems do.
You can also use more stable compression systems with ideas like
Rusty's gzip patches
Basically you shorten the compression frames - Start from zero much
more often. It would make the compression less efficient probably.
I don't think anyone has designed compression for archiving although
I'm sure it could be done.
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