Enabling Smb Direct; Verifying Rdma; Troubleshooting - Chelsio Communications T4 Installation And User Manual

Chapter II. NDIS Function
preserved, resulting in significant performance benefits. This feature is enabled by default.
Configure the relevant customer and provider network settings on the host.
2.4.

Enabling SMB Direct

SMB Direct is installed and enabled by default on Windows Server 2012 and 2012 R2 systems.
RDMA functionality on Chelsio adapters will be enabled after installing the driver from the
package.
You can use the following PowerShell command
capable interfaces in your system.
At least one adapter should indicate "RDMA Capable" true to take advantage of
Note
SMB RDMA capability.
The next step is to configure your network so that SMB server and client machines can
communicate with each other. Please configure the Microsoft firewall to allow traffic between the
SMB clients and server.
2.5.

Verifying RDMA

There are number of ways to verify if RDMA is working:
2.5.1. Verify active connections using PowerShell
Open PowerShell window and execute the command
2.5.2. Use Event Viewer
You can use Event Viewer to view SMB connection events. To do this:
i. Open Event Viewer
ii. In the console tree, expand Event Viewer.
iii. Navigate to Application and Service Logs-> Microsoft->Windows->SMBClient
->Operational
2.6.

Troubleshooting

If RDMA is not working in your system, please check for the following:

Operating system version should be Windows Server 2012 or 2012 R2.
Chelsio T5/T4 Unified Wire for Windows
Get-NetAdapterRdma
Get-SmbConnection
to get a list of RDMA
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