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Cory Snavely Library IT Core Services manager University of Michigan September 20 10

Cory Snavely Library IT Core Services manager University of Michigan September 20 10. HathiTrust proj ect profile. Launched October 2008 2 9 member institutions and growing primarily Google-scanned materials but also other sources 6.7 million volumes, 350 pages average

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Cory Snavely Library IT Core Services manager University of Michigan September 20 10

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  1. Cory Snavely Library IT Core Services manager University of Michigan September 2010

  2. HathiTrust project profile • Launched October 2008 • 29 member institutions and growing • primarily Google-scanned materials but also other sources • 6.7 million volumes, 350 pages average • 250 terabytes in two US instances

  3. Material and Data Flow storage @IU web sync network or media delivery index storage @UM web ingest Google or other scanning project rights database catalog

  4. Content Growth

  5. Content Distribution Over Time * As of July 25, 2010

  6. What do I worry about? • Trend is obvious, but not necessarily bad • External error detection may be impossible

  7. What’s the Data Integrity Roadmap? • Not all systems provide integrity features • It’s time for the data integrity model of systems to be a primary purchase criterion • SNIA Data Integrity and Long Term Retention Technical Working Groups may help to surface minimum standards or common approaches; can anyone speak to progress?

  8. Questions? Cory Snavely csnavely@umich.edu www.hathitrust.org

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