Updated: September 22, 2010
Applies To: Windows Server 2008 R2
NETDMA provides services for offloading the memory copy operation performed by the networking subsystem, when receiving network packets, to a dedicated DMA engine.
|NetDMA must be enabled in the BIOS before performing this procedure. NetDMA support is often labeled IOAT support. See the computer manufacturer’s documentation for information about modifying BIOS settings.|
|Incorrectly editing the registry might severely damage your system. Before making changes to the registry, you should back up any valued data on the computer.|
To open Registry Editor, click Start, click Run, type regedit, and then click OK.
Locate the registry sub-key HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters and click it.
Locate the EnableTCPA registry entry. If this registry entry does not exist, right-click the Parameters sub-key, point to New, and then click DWORD (32-bit) Value).
Replace New Value #1 by typing EnableTCPA, and then press ENTER.
Double-click the EnableTCPA registry value you just created and do one of the following:
To enable NetDMA, type 1 in Value data, and then click OK.
To disable NetDMA, type 0 in Value data, and then click OK.
- To enable NetDMA, type 1 in Value data, and then click OK.