Why are Mac clients are much slower to download from an Azure File Sync EndPoint Server?

Chris Parr 16 Reputation points

Hi All,

We're using Azure File Shares with File Sync to Windows file servers Endpoints and caching enabled.

For some reason Mac client machines are much slower getting files that aren't cached from the file shares than Windows ones are.

Same network connections, same user permissions, but for some reason a Windows client will get a non-cached file at approaching the maximum throughput of the network links between the Azure storage account, the file server, and then on to the client from there, but a Mac client connected to the same local switch will be lucky to get more than 100Kbps. Potentially a thousand times slower.

Normal file share access doesn't have this issue, it's only when the files are not cached and the AFS Storage Sync Agent is in the middle. Any suggestions of where to look?

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  1. Sumarigo-MSFT 42,601 Reputation points Microsoft Employee

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

    This article lists some common problems related to Azure file shares and provides potential causes and workarounds. Troubleshoot Azure file shares performance issues

    Based on your scenario, we need to investigate closely I would recommend you to contact support, so If you have a support plan, I request you file a support ticket, else please do let us know, we will try and help you get a one-time free technical support. In this case, could you send an email to AzCommunity[at]Microsoft[dot]com referencing this thread as well as your subscription ID. Please mention "ATTN subm" in the subject field. Thank you for your cooperation on this matter and look forward to your reply.

    Please let us know if you have any further queries. I’m happy to assist you further.   

    Please do not forget to "Accept the answer” and “up-vote” wherever the information provided helps you, this can be beneficial to other community members.

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