Notes on NetworkDirect (RDMA) Settings on Windows Server

Published: July 10, 2018

Thank you for purchasing NEC Express5800 Series.

If NetworkDirect (RDMA: Remote Direct Memory Access) setting is "Enabled" on Windows Server,
network features may not operate normally and unexpcepted shutdown may occur.

Please follow [Change NetworkDirect (RDMA) setting] below to change NetworkDirect to "Disabled".

• Express5800/R120h-1E
• Express5800/R120h-2E
• Express5800/R120h-1M *
• Express5800/R120h-2M *
• Express5800/T120h

( * ) For Express5800/R120h-1M and R120h-2M,
     the following procedures have to be performed if N8104-177/183/187 are installed on these servers.

• Windows Server 2012 R2 Standard
• Windows Server 2012 R2 Datacenter
• Windows Server 2016 Standard
• Windows Server 2016 Datacenter

  Please perform the following steps:

1. Run Windows PowerShell as Administrator
2. Execute the following command:

>Get-NetOffloadGlobalSetting


3. Setting contents will be shown. Confirm "NetworkDirect"
   • If "NetworkDirect : Disabled" is displayed, no further action is required.
   • If "NetworkDirect : Enabled" is displayed, please continue following the steps below.

  Please perform the following steps:

1. Run Windows PowerShell as Administrator
2. Execute the following command:

>Set-NetOffloadGlobalSetting -NetworkDirect Disabled


3. After the prompt is displayed, execute the following command:

>Get-NetOffloadGlobalSetting


4. Setting contents will be shown. Confirm "NetworkDirect" is set to "Disabled".
5. Reboot the System

  After rebooting the system, NetworkDirect (RDMA) setting should be Disabled.