The benefits of VMXNet 3 - 10 GBps ?

[AlbertWT]

Hi All,

I've just noticed that by upgrading the VM Hardware version into 7 and then installing the latest VMWare tools, we can get the option to use Enhanced VMXNet 3 NIC,

which in my Windows Server 2003 x64 Std VM it give me 10 GBps bandwidth, is this really makes any difference or just a bug in the bandwidth display ?

Thanks.

Kind Regards,

AWT

[AndreTheGiant · Accepted solution]

There are a lot of info in this thread:

And also in this KB:

http://kb.vmware.com/kb/1001805

Andre

[AlbertWT]

Thanks for posting the result here, I can see that by using VMXNet 3, the CPU utilization is lower to transmit large file.

but for the Jumbo frame, i think my current Windows Server 2003 Std doesn't support it, there fore i can't use it in my iSCSI environment.

Kind Regards,

AWT

[AndreTheGiant]

You can use Jumbo Frambe also with vmxnet2 (enhanced vmxnet).

But you have to configure the right MTU on your switches (physical and virtual) and also on your storage.

Andre