I'm responsible for a vSphere 5.1 environment that is using NFS datastores and I'm trying to collect metrics on how much bandwidth is being used to access the NFS datastores. When I first did this a week ago, I ran esxtop and looked at the network metrics and sorted by MB/s transmitted and was able to identify which to which vmnic the NFS vmkernel was linked to. I then took a look at the vmnic Usage counter to get a total of the send/receive KB/s. During my searching, I ran across another counter titled "pNic Througput Usage for NFS". Here's the rub, when looking at the Usage and pNic Throughput Usage for NFS counters over the same vmnic over the same time period, the Throughput Usage for NFS counter shows bandwidth usage much higher than that of the Usage counter (see attached image ). What gives?
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