HN user

still-old

14 karma
Posts0
Comments4
View on HN
No posts found.

In case anyone comes back to this, it's because any snapshot who's retention date is out of the retention period can get removed. When the original item is out of the retention period it can also get removed.

There is no cumulation of diffs, its just diffs from the original object.

You might notice that the quoted text of my original post has also been changed on the link.

Are you sure you understand how VEEAM MS365 actually backs up data?

They designed it to look like a differential backup model, but it's not. In fact the only backup you can trust as to its integrity is the first full one. https://helpcenter.veeam.com/docs/vbo365/guide/retention_pol...

“When a retention policy is applied in backup repositories with the Snapshot-Based Retention type, Veeam Backup for Microsoft 365 removes versions of an item, but not an item itself. Data removal from backup occurs every time the restore point of an item's version in a backup file goes beyond the retention coverage. Eventually, if no more changes were made to an item, Veeam Backup for Microsoft 365 will remove all versions of an item except the latest one. The latest versions and items that were never changed stay in a backup repository with the Snapshot-Based Retention type forever.”