I have been working on family history on and off now for about 40 years and 
more recently have been looking at the question of the preservation of 
historical records and yet have the ability to have access to these same 
records in the future.

I was referred to an article on this subject of the preservation of digital 
documents at        http://www.clir.org/pubs/archives/ensuring.pdf 

Paper is called Ensuring the longevity of digital information by Jeff Rothenberg

This paper looks into the future and considers how we may be looking at records 
in say 50 years time.
that is would there be an operating system available ( other than in a museum ) 
that could accept a CD of the year 2010

I believe that the present CD is currently being phased out by manufacturers 
and being replaced by other media.  

I raise this issue relating to CDs as a  circular came to me recently from a 
professional photographer who reported that images he placed on a KODAK Gold cd 
in 2002 have now disappeared.
The photographer recommended that users try a product called PRODISC that is 
regarded as good for between 50 and 300 years.

Not sure how that has been tested but I found it a issue of concern that images 
committed to CD could be lost in such a short time

As to the family history this means we cannot ignore the need to place written 
copies in strategic places so that future generations have ready access
That is based on the assumption that in a couple of 100 years we will still be 
speaking English in Australia. I hope so

Were others aware that CDs had this limited life span

Graeme Winters
New 27 Imac user

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