Search Knowledge Base: What is the retention policy for T-Storage backups and recovering deleted data? T-Storage files are backed up and retained based on the following policy: Hourly backups - Created every 2 hours from 9am to 7pm; available for 2 days. Nightly backups - Created nightly; available for 28 days. Weekly backups - Created every Monday; available for 90 days. Instructions for recovering files are available for Windows and Mac. Additional information about using T-Storage, including access, quota, and data recovery information, is available on the OIT website. Need more help?