Item-Level retention
Data removal from backup repositories with the Item-Level Retention type occurs every time the creation time or last modification time of an item in a backup file goes beyond the retention coverage.
The following is an example that demonstrates three simplified backup files; each file contains Microsoft Office 365 items per year where each item has its own last modification time.
For example, if your retention policy is said to be applied at 10:20 AM on September 1, 2018. In such a scenario, Veeam Backup for Microsoft Office 365 will remove the Item 1 from the Backup 1 repository because the Item 1 exceeds the retention period (2 years in our example) by 20 minutes.
The next item to be removed is the Item 2 because its last modifications were made at 10:20 AM on November 11, 2016. That said, when a retention policy is being applied, for example, at 10:30 AM on November 11, 2018, Veeam Backup for Microsoft Office 365 removes the Item 2 because its age equals 2 years and 10 minutes which exceeds the specified threshold.
The same is repeated until no items left in a repository, whereupon CloudCover 365 completely removes such a repository from the hard drive.
NOTE: |
Consider that a backup job does not archive items the last modification time of which exceeds the specified retention period. |