1. CubeBackup Documents
  2. CubeBackup for Microsoft 365 Documents
  3. FAQ
  4. How many revisions are kept in the revision history? What's the retention policy of the backup data?

How many revisions are kept in the revision history? What's the retention policy of the backup data?

Revisions

As a Microsoft 365 backup tool, CubeBackup keeps a history of versions (or snapshots) for OneDrive and SharePoint site files and folders, Outlook Mail messages, Calendar events and People contacts using the following rules:

  • Keep one snapshot for each hour over the last 24 hours
  • Keep one snapshot for each day over the last 30 days
  • Keep one snapshot for each week over the last 2 years
  • Keep one snapshot per year after two years

NOTE: Due to data structure restrictions, Teams backup snapshots will not be removed according to this data retetnion policy or your customized data retention period. Rest assured, Teams backup snapshots are stored in a combined database file and consume minimal storage space.

Data retention period

By default, CubeBackup will follow the rules outlined above. However, if you prefer not to retain that many copies, you can set the age of the oldest snapshot CubeBackup should keep, in accordance with your organization's data policies.

retention policy

Note:

  • This setting only applies to expired and deleted data. For example, if the retention period is set to 365 days, old versions of files and messages deleted from all snapshots older than 365 days ago will be removed from storage.
  • Snapshots will still be pruned over time based on the four predefined retention rules above, ensuring optimized storage management and sufficient space for recent backups. These rules are built into the system and cannot be customized, regardless of whether you choose to 'Preserve all versions' or not.