HTTP Request Timed Out

[CV_VBR]

Hello,

We are in the process of migrating from an on-premises file server to utilizing SharePoint sites/libraries. Veeam Data Cloud with M365 Backups ad Entra ID Backups have already been configured and tested and confirmed working. Yesterday we moved one of the departments to the SP and the scheduled Veeam M365 backup failed to backup the site with error "HTTP request timed out after 00:01:40.. The request was canceled due to the configured HttpClient.Timeout of 100 seconds elapsing.. A task was canceled.. A task was canceled." Although it had been several hours since the data (~90GB) was migrated there, I assume this was some sort of throttling. So, I manually ran the job this morning (12 hours later) and received a warning message of "Failed to backup list. CSOM query call failed with message: HTTP request timed out after 00:01:40.. Total count of failed items: 1". There are only two sites on this backup job and it the other was marked as successful (no changes were made it), but the second attempt does show ~90GB was successfully transferred. I'm assuming there is still throttling going on, but how do I confirm this as we have roughly 5TB to move to SP? Ideally, we want to move whole departments, but some are several hundred GB in space and we need to ensure that the data is successfully backed up from SP before "releasing" access to end users.

Thank you,
James

[Polina]

Hi James,

Without seeing your tenant and logs, I can only assume that after migration it takes some time to ayncronize all the changes across Microsoft environment. Can't say for migration specifically, but for other manipulations within M365 and SharePoint Online it may take up to 24h to sync all changes.
Throttling, of course, can also occur and impact - if you open a support case, our engineers can check the logs to confirm it.

Thanks!

[CV_VBR]

Hello Polina,

Last night's backup was successful after only migrating ~15GB. So, I will start working up from there and test different scenarios. I did forget about the dreaded Microsoft 24h "rule." I will have to plan on that as well. Looks like weekends are going to be key. Thank you for the reminder. Have a wonderful weekend!

Best Regards,
James