OCLC Digital Archive: Creating Long Term Access to Digital Masters Roberta Gebhardt, Montana Historical Society Research Center Sarah McHugh, Montana State Library Fall Workshop, 2010

Montana’s Statewide Tools  Montana Memory Project: Public access to digital collections  Montana Digital Archive: Long term access/preservation of masters

Defining Long Term Access  Digital preservation as “long term access”  Master files  When to think about preservation of the master file in a digitization project  Planning a digitization project that includes both

Questions to Ask  When will you know to take preservation actions?  What is in your collection?  How will you store & maintain digital masters for 5, 10, 50 years?  Where have you put them?

Digital Archive provides  Systems management  Physical security  Data security  Data backups  Disaster recovery  ISO 9001 Certification

Digital Archive performs  Manifest verification  Virus check  Fixity check (digital fingerprinting)  Format verification  Reports on … – Storage use & growth – File types – Accesses & disseminations

Accessing the Digital Archive as an MMP contributor Montana Memory Project: Digital Archive Profile Collaborating libraries: 17 – academic, public, government Number of collections: 47 Photographs / Brand Registers / Maps / Diaries / Yearbooks Repository software: CONTENTdm (hosted by OCLC) Archive submission frequency: Daily / Project Current number of files in DA: 46,622 Total storage: 1 terabyte User since: April 2008

Simple, straightforward workflows Digital Archive fits in …  Local digital asset management systems  CONTENTdm collection building  WorldCat cataloging  Web Harvester

Local content management system workflow Digital Asset Mgt. System WorldCat Digital Archive Files from your local computer or network Metadata and display image Master files on physical media mailed to OCLC, or transferred with network ingest Metadata

Building your digital collections with CONTENTdm - workflow Digital Archive Master files on physical media mailed to OCLC, or transferred with network ingest CONTENTdm WorldCat (1) Project client and (2) Web-based Add Dublin Core metadata and files from local computer or network

CONTENTdm workflow

DA Uploader

After successful upload, you will receive an when the Digital Archive completes Ingest processing, usually within 24 hours, depending on the size of your archival volume and the current processing load of the Archive.

Building your digital collections with Connexion digital import - workflow Connexion digital import CONTENTdm WorldCat Metadata Files from your local computer or network Metadata and display image Digital Archive Master file

Getting your master files out of the Digital Archive (dissemination)  Single file dissemination/web browser delivery  Bulk dissemination

Single File Dissemination Free. One file at a time. Only the image is returned.

Bulk Dissemination Fee associated with this action. Removes files and metadata from the Digital Archive.

Reports  Storage use and growth  File Types  Access and disseminations

Report examples

Questions?    brarians/Digitization/Montana_Memory_Proj ect/default.asp brarians/Digitization/Montana_Memory_Proj ect/default.asp brarians/Digitization/Montana_Memory_Proj ect/default.asp  Thank you to Taylor Surface, OCLC Digital Collections Services, for the use of his slides