I have an ESXi server with an Intel X520-DA2 10 gig adapter in it. It has an iSCSI data store connected over one port and VM traffic over the other port. The iSCSI speed just couldn't be better but the problem seems to be that none of my VM's will do over 300 megabits/sec. Their all using VMXNET3 adapters. I have gone so far as to hook the second 10gig port directly up to another standalone windows server to eliminate the network/switch as a bottleneck via an SFP+ cable, but am still limited to the ~300 megabit ceiling. Any clues to what could be causing this? Thanks in advance!
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