Very Low Read Speed over 10gbe Share Win server 2019

Mahmoud Al.Gendy 1 Reputation point
2022-10-01T07:51:20.167+00:00

Hello

i'm using windows server 2019 to share a local raid 5 storage over 10Gbe Cat7 network (physical server no VMs) to windows 10 clients .

The problem is , when i tried to test the network speed either with BlackMagic disk speed test or iPerf3 . i noticed that i get the desired Write speed but a very poor read speed less than 60MB/s.

i tried every thing even connecting the server directly to the client over an SFP cable and still getting the same poor read speed .

The server NIC card is :

HP Ethernet 10Gb 2-port 530FLR-SFP+ Adapter

any suggestions ?

Regards

Windows Server 2019
Windows Server 2019
A Microsoft server operating system that supports enterprise-level management updated to data storage.
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Windows 10 Network
Windows 10 Network
Windows 10: A Microsoft operating system that runs on personal computers and tablets.Network: A group of devices that communicate either wirelessly or via a physical connection.
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Windows Server Storage
Windows Server Storage
Windows Server: A family of Microsoft server operating systems that support enterprise-level management, data storage, applications, and communications.Storage: The hardware and software system used to retain data for subsequent retrieval.
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  1. Limitless Technology 39,406 Reputation points
    2022-10-06T07:48:38.767+00:00

    Hello

    Thank you for your question and reaching out. I can understand you are having issues related to slow Share or SMB performance.

    Please try Disable “Large Send Offload (LSO)”

    Control Panel> Device Manager> Network Adapters> Advanced tab
    Select Large Send Offload V2 (IPv4) and set the value to Disabled
    Do the same for Large Send Offload V2 (IPv6) if it is available

    Reference thread

    https://learn.microsoft.com/en-us/answers/questions/80403/win10-server-2019-slow-files-transfer-interesting.html

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