Hello Siva
Thank you for posting your query on Microsoft Q&A platform.
Azure Monitor Workbooks cannot display the utilized storage size of a Recovery Services Vault (RSV) because Azure does not expose RSV storage-consumption metrics or logs through Azure Monitor, Log Analytics, or the Metrics API.
It only exposes these types of information for Recovery Services Vaults in Azure Monitor:
Health Events, Backup/Restore Alerts, Backup Job details, etc.
Supported Log Tables capture jobs, alerts, protected items but not vault used storage
None of these logs or metrics contain “Used Size”, “Utilized Storage”, or “Storage Consumed” for the vault.
Because Azure Monitor/Log Analytics does not hold that data, a Workbook query cannot retrieve or visualize this information.
It provides RSV storage usage only through:
- Recovery Services Vault → Overview → Usage Tiles which shows the consumed LRS/GRS backup storage directly inside the vault UI.
Reference: https://learn.microsoft.com/en-us/azure/backup/backup-azure-manage-windows-server
- Backup Reports (Power BI): Backup Reports provide vault‑level and item‑level storage data across subscriptions.
Azure Monitor Workbooks cannot show RSV utilized size because no metric exists in Azure Monitor for vault storage consumption. No Log Analytics table contains vault size. Diagnostics settings do not export storage usage. KQL cannot retrieve RSV size, because the backup service does not emit that data.
If you have any other queries, please do let us know.
Thanks,
Suchitra.