TDL maintains a DSpace installation for training and demonstration purposes at https://training-ir.tdl.org/. The installation runs in the latest version of DSpace in which all TDL hosted installations run. It is not integrated with Shibboleth authentication.
The Training DSpace is NOT available 24/7. During periods when it is not in use, TDL may "turn off" the repository, but it can be brought back up upon request from a member institution (via support@tdl.org).
When the Training DSpace is running, it is available during business hours: M-F, 7:30am-5:30pm (central). It is not accessible outside of those hours.
To use the repository, you may register a user account and then request Administrator access.