Digital Preservation Services

The TDL offers Digital Preservation Services to help Texas cultural heritage and scholarship stewards provide access to their treasures for the long term through direct consulting, training at all levels, and workflow support that includes the right combination of technologies for your unique content needs.

Every digital preservation storage option begins with DuraCloud™ @TDL.

Preservation Storage Choices

  • Digital Preservation with Chronopolis
  • Digital Preservation with Amazon S3
  • Digital Preservation with Glacier
 

Chronopolis

Amazon Web Services

S3

Glacier

Mission Non-commercial, rooted in cultural heritage community

Commercial

Commercial

Geographic Distribution Any three from the following technologically diverse partner nodes: UCSD, TDL, UMIACS, and NCAR

Amazon East

Amazon East

File Fixity and Data Integrity DuraCloud@TDL MD5 hashes on upload.

Chronopolis checks SHA-256 hashes every 30 days or as specified by member, not to exceed 6 months.

ACE audit tool creates and checks ‘tokens’ for data integrity.

DuraCloud@TDL MD5 hashes on upload.

Combination of MD5 hashes and cyclic redundancy checks (CRCs) with unspecified regularity, on upload, and when content is moved.

DuraCloud@TDL MD5 hashes on upload.

Combination of MD5 hashes and cyclic redundancy checks (CRCs) with unspecified regularity, on upload, and when content is moved.