OCLC Online Computer Library Center
Digital Preservation with OCLC
Digitization Standards: Issues & Updates
Taylor Surface, OCLC
OCLC Online Computer Library Center
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!
OCLC Online Computer Library Center
Time marches on …
OCLC Online Computer Library Center
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?
OCLC Online Computer Library Center
What’s 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
OCLC Online Computer Library Center
A practical example …
Registry of Digital Masters
Digital Archive for Digital Masters
OCLC Online Computer Library Center
Registry of Digital Masters
Coordination
Trust
Discovery
OCLC Online Computer Library Center
Digitization Workflow
OCLC Online Computer Library Center
OCLC Digital Archive… for digital masters
Co-developed with …
OCLC Preservation Services
Various digitization projects
Preservation master files
Managed storage & preservation
Recovery
Re-use
OCLC Online Computer Library Center
OCLC Digital Archive
On-site and offsite backups
Ongoing virus and fixity checks
Migration of media on which bits are stored
Disaster recovery
Managed Storage & PreservationManaged Storage & Preservation
OCLC Online Computer Library Center
Digitization Workflow
mastersDigital Archive
OCLC Online Computer Library Center
Villanova University
The Irish Press – Newspaper
Dedicated to Irish Nationalism
1918 -1922
Preserved
Filmed
Digitized
Archived
OCLC Online Computer Library Center
Know where the costs are!
The usual comparisons …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 …The hidden issues …
Operational costs?
Associated systems?
Accessible in one, two, ten years?
OCLC Online Computer Library Center
More information
Registry of Digital Masters: www.diglib.org/collections/reg/reg.htm
Digital Archive: www.oclc.org/digitalarchive
OCLC Online Computer Library Center
Digital Preservation with OCLC
Digitization Standards: Issues & Updates