So we are currently building a medium sized 2012 SQL cluster with always on technology enabled. We have decided to move the heartbeat network to a dedicated set of network cards so as not to communicate over the production network. I have been told that using an e1000 network card would be best practice as windows has the drivers built in to the OS and there is no need for anything "extra" since its only a heartbeat network. The current production network is running on vmxnet3 adapters at the moment without a problem. What do you guys think? E1000 or vmxnet3 for heartbeat network?
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