Challenge
Backup jobs display either of the the following warnings:
- “Repository database size is approaching the size limit of 60 TB. Current database size is 58 TB. To learn how you can free up and reuse space in your database, please see KB article 2681.”
- “Repository database size limit has exceeded the size limit of 60 TB. Current database size is 60 TB. To learn how you can free up and reuse space in your database, please see KB article 2681.“
Cause
The Repository database cannot grow over 64 TB due to the JET Blue database engine limitations. Should this limit be reached while some transactions are still uncommitted, the database will be left in a dirty shutdown state with no option to recover it, as there is no more free space to commit those transactions.
To avoid such scenario, a warning and a fail-safe mechanism were hardcoded into Veeam Backup for Microsoft Office 365. The warning will appear once repository database file reaches 58TB, and the error will block any jobs from writing into such file once it reaches 60TB.
Note: Space is calculated based on the size of the database file and available space within the file. Thus, if you have a 60TB container (file) and 50TB of it marked as free space, you will receive neither warning nor error
Solution
Remove excessive data with PowerShell cmdlet Remove-VBOEntityData or move some of the backup data to another repository with Move-VBOEntityData.