pef vs dng

paul stenquist pnstenquist at comcast.net
Thu Oct 8 21:13:49 EDT 2009


I have hundreds of DVDs that were burned with backup photo files. Some  
are five or six years old. I did a spot check of a few dozen the other  
day, and all were good.

Every duplicate copy of a file is a backup. But some backups are  
better than others.

Paul
On Oct 8, 2009, at 9:05 PM, Graydon wrote:

> On Thu, Oct 08, 2009 at 12:42:48PM -0500, Tom C scripsit:
>> Most of my images from the last 3 years are backed up on two  
>> different
>> external hard drives, but I really should burn them to DVD's as well.
>
> It's not a backup until there are three physically distinct copies, at
> least one of which is somewhere else.
>
> Burnable DVDs have a terrible shelf life and should not be considered
> backups.
>
> -- Graydon
>
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