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(2005-11-15) Configuring The NICs (Load Balanced Or Fault Tolerant) On Your DCs

Posted by Jorge on 2005-11-15


Most servers bought at this moment have two NICs. With that you have three possibilities of configuration and use:

(1) Configure the NICs on the server as a "load balanced" team

This is used to distribute network traffic across NICs to achieve maximum throughput. The configured team (virtual NIC) has the IP address configured.

(2) Configure the NICs on the server as a "fault tolerant" team

This is used when redundant network switches are available so that when one NIC or switch dies, the server continues to operate on through the other NIC or switch. The configured team (virtual NIC) has the IP address configured

(3) Configure one of the NICs and disable the other one

Well.. that’s easy. Only one NIC works which has an IP address and the other is disabled. If the enabled NIC dies, you need to enable the other manually to use it. And if the switch dies you need to get a new one and plug the cable into it.šŸ˜‰

In the "Windows Server System Reference Architecture" (WSSRA) Microsoft states:

"At this time, Microsoft does not support load balanced network teams on domain controllers due to potential data corruption issues" (Taken from the Directory Services Blueprint – page 29)

Cheers,
Jorge
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