You can access AFS (Student File Storage) via the web interface at http://afsweb.ec.auckland.ac.nz/.
The data retention policy for the EC AFS (Student File Storage) service is governed by the Student Data Storage Policy. Use of all EC services is governed by the regulations and policies of the University, including the ICT Statute (2007). These are published in the University of Auckland Calendar and on the information security web site, which can be accessed via the ICT site.
Acceptable use can be summarised as:

If you're having problems with EC AFS (Student File Storage), the EC AFS Self test utility will run a basic check on your EC AFS (Student File Storage) directory, permissions, and offer advice on how to fix basic problems. If the problem continues, you should cut and paste the results of this test, and send an email to the IC Helpdesk.
All staff and students are entitled to a quota of 250 MB. If you are having problems with the EC AFS (Student File Storage) quota you can check this online by logging on to NetLogin, going to the View My Account and scrolling to the AFS (Student File Storage) Quota section at the bottom.
EC AFS is backed up regularly (every night).