Re: imaging software--disk dupers/MDISC etc

[flash flash@xxxxxxxx]

On 29/10/13 2:10 PM, Harry Binswanger wrote:
> I would think 4 would be more than sufficient.
> 
> Just an idea. I'm not pretending to be a storage/backup expert.
 The three golden rules of back ups are:

Redundancy, redundancy, and redundancy.

Three physically separate media at three separate locations. One
digital copy, one hard copy, and something else in a different format
to the other two. Example: file on an external HD, printout (OCR
scanable), file on CD or DVD. I recall one of my students assuring me
he had three physically separate copies. Turns out they were all on
HDs in the building's cellar. That was the year the Elbe River flooded
their basement. All date lost.

In principle, you must protect against four main hazards: fire, flood,
war, and bit rot. Copying the same file to 10 identical HDs does not
protect against bit rot. If there were some technical failure in the
manufacturing process for that series of HDs, it could affect all ten
drives at roughly the same time in the future.

Cheers,