The mirror service supports various IT operations by providing local copies ("mirror sites") of selected software sites and other internet repositories. Local mirror sites typically offer fast downloads, do not depend on the availability of networks beyond Oxford, and reduce the load placed on our JANET connection and the source sites.
The service currently carries several popular Linux distributions and a number of open source software projects including CPAN and CTAN. It is intended to carry primarily technical resources, however non-technical sites may be mirrored if there is demand.
The mirror service has been available in its current form since 1999. Before that a similar service was provided via FTP and NFS.