[ale] 26G to backup

[Jim Kinney]

On Tue, Jan 3, 2012 at 5:04 PM, Geoffrey Myers
<lists at serioustechnology.com>wrote:

> Brian Mathis wrote:
> > 32GB flash drives can be had for $25 each, and would be much more
> > reliable and easier to use than a stack of DVDs.  FYI, burned DVDs
> > only last a few years before they start to go bad.  If you don't trust
> > the disk, buy 2 of them and keep copies on each.
>
> What? As long as you go with a decent brand, the research I've done says
> 30+ years.  Certainly not 'a few years.'
>

This _really_ depends of media, burn speed, storage environment, etc.

slow burn speed, really top quality media (look for archival quality -
$$$$), cool, _dark_ (no UV of any kind - no florescent lights).

CD/DVD dyes will degrade over time (chemistry happens!) so slow burn makes
more intense data bit and the rest is all about slowing down the change.

Purchased DVD media uses a stamp process to make the pits and lands so is
not subject to the same type of degradation process.

See here for some more details:

http://www.clir.org/pubs/reports/pub121/sec5.html

>
> --
> Until later, Geoffrey
>
> "I predict future happiness for America if they can prevent
> the government from wasting the labors of the people under
> the pretense of taking care of them."
> - Thomas Jefferson
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-- 
-- 
James P. Kinney III

As long as the general population is passive, apathetic, diverted to
consumerism or hatred of the vulnerable, then the powerful can do as they
please, and those who survive will be left to contemplate the outcome.
- *2011 Noam Chomsky

http://heretothereideas.blogspot.com/
*
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