Slow througput using Azure File Share

Question

We are using Azure Fileshare as a mapped network drive. When we transfer files using file explorer it goes all the way down to 1 megabyte pr. second, but when we use Azure Storage Explorer we get a much higher througput. Is there a known issue when using Azure File Share as a mapped network drive? We have tested on multiple computers, with the same result.

Answer 1

Hi , SMB Protocol Overhead: Azure File Share uses the Server Message Block (SMB) protocol for file access, which introduces overhead compared to direct access methods used by Azure Storage Explorer. This overhead can contribute to slower transfer speeds, especially over high-latency connection. So this is expected behavior in someway. Please check below link for more details https://learn.microsoft.com/en-us/troubleshoot/windows-server/networking/slow-smb-file-transfer To fix this please try below methods Batch Transfers: Instead of transferring files individually, consider batching multiple files into a single transfer operation to reduce the impact of SMB protocol overhead. Robocopy : https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/robocopy Please accept , if it helps , Thanks