[Milsurplus] [MRCA] Lunar Photos

[Wammes]

Well...

Do not be too sure that CD-R will hold out. More then ten years back I 
was the publisher of a Dutch computer magazine, PC-Active, and one of 
our editors found more or less by accident that several brands got 
unreadable within three years - of storage, in a closed cupboard in a 
climate controlled office environment. We went into it and our 
conclusion was that some manufacturers were cutting costs by trying to 
minimize on materials cost. A well manufactured CD-R should last a 
hundred years, if it's stored under good circumstances - we discussed 
that at length with several of the technical people within Philips, 
together with Sony the developers of the CD-R medium. They were able to 
proof so as well, using Arrhenius testing methods.

But as a user there is no way you can certify if the blank you use is up 
to standard. Me, I took no risks in those days and copied my CD-R data 
every year unto a fresh one.

We coined the term "cd-rot" - which means exactly the same in Dutch - 
for this discovery. Try Google, it got international coverage.

Wammes Witkop


Peter Gottlieb schreef op 25-4-2014 22:41:
> I'd like to see gigabytes of stone storage ;-)
>
> You could always store it in the cloud, good luck there.
>
> I still have some pretty old CDs which seem to read fine. They have a pretty robust ECC so I suppose they will work fine until the day the ECC can't keep up and then that's the end of that!
>
>
> Peter
>
>> On Apr 25, 2014, at 6:49 PM, Gene Smar <ersmar at verizon.net> wrote:
>>
>> Compare the longevity of storage media used by ancient civilizations (stone) vs our modern societies ("electrons" on physical tape or, worse yet, within ICs.)   I often wonder how much of our current culture will really be preserved for future generations, with our art, music, photography, historical records, etc. all "preserved" on such evanescent media.
>>   
>>   
>> 73 de
>> Gene Smar  AD3F
>>   
>>   
>> On 04/25/14, J. Forster<jfor at quikus.com> wrote:
>>   
>> I still have the capability of reading punch cards, reading and punching
>> paper tape, and 7 track mag tape. Some of the older mag tape is flakeing
>> badly and won't be readable for much longer.
>>
>> -John
>>
>> ================
>>
>>
>>
>>> Platforms come and go at alarming speed these days. Not uncommon to see
>>> pallets of tapes being sold at Wallops or Goddard for next to nothing. The
>>> last couple years there have been almost endless lots of D1 digital video
>>> cassettes, a huge expensive non compressed digital format for analog NTSC
>>> Here at the university we just pulled some one inch C format video tapes
>>> we had from the nineties and found that all the local TV stations no
>>> longer have that format and am now looking at trying to find a playback
>>> deck for that format. We still have a working 16 MM projector and am
>>> surprised by how many have come and wanted us to transfer from that to
>>> video. The problem is not that there is not the media out there but the
>>> equipment to transfer the old media to any current format is the issue.
>>> In the last five or ten years I have been working with old DEC computers
>>> at home, maybe more then with radios. The thing that occupies the most
>>> time is rebuilding drives and copying media with one of the largest
>>> ongoing projects being transferring old files to more modern platforms and
>>> getting modern systems to be able to push software to old systems. That's
>>> the big project around the shop these days.
>>>
>>> Ray F
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>>
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