Dear Sirs,

Disc quality, materials to be used are important. However, more importantly, error rate management at the time of writing and surfing storage is the key for successful archiving.

Optical discs are the only format the "safe level of error rate" is defined in ISO. This guidelines have to be considered for archives, then your data is safe for a long time.

Best regards,
Max

Jul 17, 2013 16:20、"John Schroth" <[log in to unmask]> のメッセージ:

Hi Steve:

I have not yet seen discussion of platinum disks on either the ARSC or the AMIA list-serves. Who is the manufacturer of these disks?

This is my personal opinion, but what's more important than the reflective surface is the "permanence" of the chemical formulation in the dye layers. This and the manufacturer. I'd pass on a platinum disk if the manufacturer is not JVC/Taiyo-Yuden, Verbatum or MAM-A (they all manufacture in-house to tight tolerances and use the better chemical formulation for the dye layers). Also another consideration - gold reflective surfaces have been around long enough, I imagine, that we would have heard reports about it adversely effecting the chemicals in the dye layers. We do not yet know if platinum could adversely effect the chemicals in the dye layers of the disk. Platinum "sounds great" but don't forget - it's the pioneers that have the arrows in their backs!!!

Just my two bits.

John Schroth


On 7/17/2013 12:20 PM, Steven Smolian wrote:
>
> I've received an offerfrom a regular supplier of recordable CDs with
> platinum rather than gold for about $ 120 per 100. Since platinum doesn't
> oxidize same as with gold, I'm wondering about reports on this product. Any
> deeply learned responses?
>
>
> Steve Smolian
>