slow performances from Azure file share to windows onprem

Question

What could be the possible reasons on the performance issues from Azure File Share to On-premise File Servers.

We are high bandwidth Express Route Connection with 5gbps speed.

• Goblin

Answer 1

@Mark Goblin Welcome to Microsoft Q&A Forum, Thank you for posting your query here!

May I know what kind of slow performance issue are you referring? Performance depends on multiple factors such as network throughput, latency, etc. Please use this URL to determine the latency: https://azurespeedtest.azurewebsites.net/ . Higher the latency, slower the download speed would be. To eliminate the effect of such external factors,

Azure File provide a best IO performance to all users accessing the server with high-importance to data integrity and fairness to all users in all scenarios.
If you are facing any issue in downloading or uploading use azcopy tool.

Troubleshoot Azure file shares performance issues

Hope this helps!
Kindly let us know if the above helps or you need further assistance on this issue.

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Answer 2

Hi @Mark Goblin ,

is Azure File Share connected via Private Endpoint to your Azure environment like described in this graphic?

https://learn.microsoft.com/en-us/azure/architecture/hybrid/azure-files-private#architecture

Or if your Azure File Share is not using a private endpoint the access might be over your internet connection and not via Express Route.

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(If the reply was helpful please don't forget to upvote and/or accept as answer, thank you)

Regards
Andreas Baumgarten