Digital Preservation with OCLC

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Digital Preservation with OCLC

• Digitization Standards Issues Updates
• Taylor Surface, OCLC

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Your digitization project

• Grant funding, limited time
• Volumes of files data
• Grad students, volunteers, staff
• TIFF, JPEG, GIF, BMP
• Where to put those master files?
• Web layout
• Online!

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Time marches on
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Daily operations

• Users request reprints
• Servers are replaced
• Collection is expanded
• An image file is corrupted
• Software is upgraded
• A hard disk fails
• what happened to those master files?

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Whats needed here?

• Track master file location
• Associate master with access copy
• Manage master file storage
• Prepare for future uses
• ? Limited staff time for these functions

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A practical example

• Registry of Digital Masters
• Digital Archive for Digital Masters

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Registry of Digital Masters

• Coordination
• Trust
• Discovery

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COORDINATION
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TRUST Use copy

• Persistent URI
• Terms conditions for access
• Special instructions
• Technical information
• Non-standard application

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TRUST Master copy

• Creation standards
• Data format
• Repository practices
• Persistent ID
• Terms conditions for access

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DISCOVERY
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Digitization Workflow
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OCLC Digital Archive for digital masters

• Co-developed with
• OCLC Preservation Services
• Various digitization projects
• Preservation master files
• Managed storage preservation
• Recovery
• Re-use

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OCLC Digital Archive
Managed Storage Preservation

• On-site and offsite backups
• Ongoing virus and fixity checks
• Migration of media on which bits are stored
• Disaster recovery

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Digitization Workflow
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Villanova University

• The Irish Press Newspaper
• Dedicated to Irish Nationalism
• 1918 -1922
• Preserved
• Filmed
• Digitized
• Archived

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DISCOVERY
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Know where the costs are!

• The usual comparisons
• CD 0.60 per Gigabyte
• DLT tape 15 per Gigabyte
• PC hard-drive 6 per Gigabyte (and you get a PC
  too!)
• The hidden issues
• Operational costs?
• Associated systems?
• Accessible in one, two, ten years?

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More information

• Registry of Digital Masters
• www.diglib.org/collections/reg/reg.htm
• Digital Archive
• www.oclc.org/digitalarchive
• Me
• taylor_surface_at_oclc.org

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Digital Preservation with OCLC

• Digitization Standards Issues Updates
• Taylor_surface_at_oclc.org