ESXi host with Nexenta direct i/o guest

Tags:
Nexenta
VMware
VMware ESXi
vSwitch
I have a home ESXi box with a Nexenta direct i/o guest. I want to let ESXi use an array for datastore. I tried nfs and the nfs share kept dropping offline causing undesired consequences. I am currently trying an iSCSI VMK from ESXi to Nexenta. I am using 9000 mtu. My thought was it should never leave the ESXi box back to my home router/switch. I do have jumbo frames enabled on my home router/switch. My thought was that the traffic should ever leave the vSwitches since layer 2 would just go from vSwitch to vSwitch. I was looking at my home router/switch syslog today trying to figure out why I am not seeing traffic on a VM that lives on the shared array. Traffic is going to my home router/switch then back to the ESXi box. My home router from the looks of logs will on handle 8192 mtu. I can back the mtu down from 9000 on the vSwitches but my question is... Is there a way to make the transport to and from without the data ever leaving the box? They are on the same PCI express bus. I am pretty new to this and finding info on VMware website is plenty full... that's the problem. I can't find what I seek. If I am asking to much for a back yard mechanic home user so be it. I am just thinking there has to be an easier way to get data to and from that I don't know about or how to do without someone pointing me in the right direction.
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