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Thanks. One reason they did that was they were orignating on MD (and 
CDR) and another was that they were syndicated and the "network" online 
format was MD. They wouldn't have done it for only the tertiary reason!

Your reasoning is very sound, and I wasn't questioning that.

Deeper question: how are gold CDRs more archival? They still use 
chemicals for the coding, so is it just the better reflectivity? And I 
am unfamiliar with the term MAM-A. Pardon if this is too elementary, 
but I am here to learn as long as it doesn't bother the real 
archivists! I'm small time myself compared to many of you... If I need 
to brush up on basics just send me there and I'll be quiet!

<L>

Lou Judson  Intuitive Audio
415-883-2689

On Oct 13, 2005, at 3:36 PM, Richard L. Hess wrote:

> Lou,
>
> You raise good points about the M-O structure of MDs. I hope I was 
> careful to address the player issue in my original post. Your friend 
> may be correct, but I believe most life-time analysis has been done on 
> industrial M-Os not MDs. I'm sure not trusting my stuff to MD. I 
> consider it a capture medium, not an archival medium.
>
> There have been both manufacturer and independent testing about the 
> longevity of the Phthalocyanine dye used in the MAM-A discs. It is 
> claimed that this is a Mitsui patent.
>
> I suspect that the writing drive is an issue for both MDs and CDs. 
> Jerry can chime in with more details here.
>
> I'm using managed disc drives for much of my current storage and I am 
> a fan of managed storage in the data domain. I am not a fan of 
> dedicated formats in general for archiving. I make an exception for 
> gold audio CD-Rs as they are readable in computers as well as audio 
> players.
>
> Cheers,
>
> Richard