Digital preservation auditing metrics are used to ensure that an institutional repository is using updated tools, technology, and process for preserving data. The metrics include standards on governance, digital object management, and security and technologies. Many institutions have begun pursuing certification, and it is an ultimate goal for Virginia Tech Libraries' digital preservation initiatives.
Digital preservation development extends far beyond this timeline, but this also illustrates how these metrics are evolving incrementally and through international collaboration.
David Rosenthal's DSHR's Blog on TRAC Certification of the CLOCKSS Archive.
Bishoff, L., The Bishoff Group, & Rhodes, E. (2007). "Planning for digital preservation: A self-assessment tool." NDCC. Available here.
Welch, T. & Phillips, K. (2014). Trustworthy repositories: Audit and certification (TRAC) Cline 63 Library internal audit, Spring 2014. Available here.
Witt, M., Kroll, M., Minor, D., and Reilly, B. (2012). "ISO 16363: Trustworthy Digital Repository Certification in Practice." Purdue e-Pub. Available here.