Dlfadm: 6 revisions imported: Migrate NDSA content from Library of Congress

2016-02-11T19:20:49Z

6 revisions imported: Migrate NDSA content from Library of Congress

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*'''John Passmore (WNYC)''' [https://twitter.com/WNYCarchives @WNYCarchives]
**30,000 CD-DA - CD-Rs with encoded audio
**Created in early 2000s by WNYC staff
**Considered preservation masters for that era
**Group of CDs were made using same machines, same brands of discs, so in a sense a control group
**CDs function as material for the reference library for a long time - Librarians noticed that pulling CDs some were not playing, ripping properly, determined a need to get data off of the CDs ASAP, purchased equipment and made a RIP station.
**Ripped about 8k CDs, dumping wav files at digital asset management station, cataloging.
**First wanted to test some to learn about increase in errors and condition of collection.
**Plextor drives used.
**Large spectrum of discs regardless of year they were from and different levels of accessibility.
**2400 Mitsui silver CD-Rs
**20% of silver cds measuring previously detectable errors
**None passed IASA’s specs for errors - technicians instead looking for what CD is getting kicked out and why.
**Not gradual increase based on date - totally random variables
**Conclusion: CD-DAs don’t last long and are unpredictable, accelerating aging only part of issues with optical media - hardware to make data, care and handling etc.
**More open source solutions would be great to use with hardware that exists
**Contact John Passmore at WNYC: jpassmore@nypublicradio.org

NDSA:Standards and Best Practices Working Group/Optical MeetingNotes/Passmore - Revision history

Dlfadm: 6 revisions imported: Migrate NDSA content from Library of Congress