Digital Preservation Services Overview
The TDL offers Digital Preservation Services to help Texas cultural heritage and scholarship stewards provide access to their treasures for the long term. TDL Digital Preservation Services include:
Distributed Digital Preservation Storage with auditing
Digital Preservation Consulting*
Participation on Digital Preservation Services User Group
*Regular members who elect DP Services can schedule a full day of consultation with a digital preservation expert to prioritize content, plan workflows, and discuss related concerns.
Every digital preservation storage option begins with DuraCloud™.
TDL Members with both Digital Preservation and Repository services enabled, the following documentation describes the use of functionality that semi-automates the transfer of DSpace content to DuraCloud at TDL (and then into selected storage for preservation): Digital Preservation of DSpace Content
Preservation Storage Choices
Digital Preservation with Chronopolis
Digital Preservation with Amazon S3 Standard
Digital Preservation with Glacier Flexible Retrieval
Comparison of storage choices
Chronopolis | Amazon S3 Standard | Amazon Glacier Flexible Retrieval | |
|---|---|---|---|
Digital Preservation Storage options via DuraCloud@TDL | Non-commercial, rooted in cultural heritage community | Commercial | Commercial |
Geographic Distribution | Three technologically diverse partner nodes: UCSD, TDL, UMIACS | Amazon East | Amazon East |
File Fixity and Data Integrity |
Chronopolis checks SHA-256 hashes every 90 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. Amazon does some 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. Amazon does some combination of MD5 hashes and cyclic redundancy checks (CRCs) with unspecified regularity, on upload, and when content is moved. |
Additional Information