How to access the restore speed statistics when restoring back to a mailbox; another user tried restoring the data using Veeam Explorer for exchange and said the restore speed is really slow. Unfortunetly, I could find a way to check what restore speed is and which proxy server is utilized when restoring back to a mailbox.
I had tried the PowerShell Command Get-VBORestoreSession, however it does not return anything useful
Tried looking at the logs at C:\ProgramData\Veeam\Backup\ExchangeExplorer\Logs; and notice multiple entries relating to
[27.11.2023 16:55:09.384] 15 (13004) Exchange Web Services error code: ErrorServerBusy
[27.11.2023 16:55:09.384] 15 (13004) Warning: Exchange Web Services request failed
[27.11.2023 16:55:09.384] 15 (13004) Warning: Failed to create items.
[27.11.2023 16:55:09.384] 15 (13004) Warning: The server cannot service this request right now. Try again later.
[27.11.2023 16:55:09.384] 15 (13004) Unable to process mailbox. Server cannot service the request
[27.11.2023 16:55:09.384] 15 (13004) Waiting before next processing attempt: 00:02:00...
[27.11.2023 16:57:09.385] 15 (13004) Trying to resume...
[27.11.2023 16:57:12.087] 15 (13004) Exchange Web Services error code: ErrorServerBusy
[27.11.2023 16:57:12.087] 15 (13004) Warning: Exchange Web Services request failed
From reading the error message it could mean that M365 has throttled your restore.
You may try to temporary disable throttling for Exchange Online: https://www.veeam.com/kb4198
Restore is done from the machine where the restore explorer is running.
Restore data flow:
- Repository -> Proxy server -> Controller (backup server) -> Explorer -> M365
For the Proxy Server only one is possible. The one you have configured for the repository.
Feel free to open a case with our customer support and let them check the log files if you continue to see slow restore speeds.