Mudcat Café message #764174 The Mudcat Café TM
Thread #47161   Message #764174
Posted By: johnross
12-Aug-02 - 11:23 PM
Thread Name: TECH: How long do CDRs last?
Subject: RE: TECH: How long do CDRs last?
We're facing the question of long-term survuval in the NW Folklife audio archive project. The archival community has not accepted any single standard for audio archives, so various archives are using different apporaches.

Our plan is to make the master digital copies on two sets of hard drives, with a third set of CD-R copies. The hard drives will be twice the definition (in bits per second) of audio CDs. I'm reasonably confident that this will give us at least one set that somebody can use 50 years from now.

Other archives are using quarter-inch analog audio tape, or DLT format digital tapes. Nobody seems to like DAT, because it has dropouts.

It's my understanding that archival-quality CD-Rs (Mitsui, Kodak, maybe T-Y) can be expected to last at least 50 years. All bets are off with cheap consumer CD-Rs.