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Quick Tip - How to use Apple Thunderbolt 2 ethernet adapter with ESXi 7.0 or greater

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I was doing some testing on my Apple 2018 Mac Mini with the latest ESXi 7.0 Update 1 release and I needed to setup a separate network connection as the onboard 10GbE was not working for me initially. I was out of ideas but I did remember that I still have my Apple Thunderbolt 2 to gigabit ethernet adapter which was something I had used quite a bit in the early days when I was using the Apple Mac Mini as my homelab system.

Like all recent Apple Mac's, the 2018 Mac Mini only supports Thunderbolt 3 (USB-C) ports and obviously not compatibility with the network adapter. Luckily, I did have an official Apple Thunderbolt 3 to Thunderbolt 2 adapter lying around which would allow me to connect the network adapter to the Mac Mini and to my surprise, it was automatically detected by the latest release of ESXi!


This partially came in a surprise because the Apple network adapter uses the Broadcom tg3 driver and I was not 100% sure if the native Broadcom (ntg3) would automatically claim this device since it was never officially supported.


Its definitely good to know this ethernet adapter still works as long as you have a TB2 to TB3 converter adapter and this should also work for any Intel NUC that have Thunderbolt 3 ports.

Thunderbolt to 10GbE Network Adapters for ESXi

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I was recently made aware of this article in which the author, Karim Elatov, had successfully demonstrated the use of a Sonnett Thunderbolt 2 to 10 Gigabit Ethernet Adapter with ESXi running on an Apple Mac Mini. As far as I am aware of, this may be the first public confirmation that such a device would work with ESXi, not to mention having it functional on the Mac Mini. I know in past years, there have been unconfirmed reports on various forums mentioning a Thunderbolt to 10GbE solution that works with ESXi but it was unclear on whether custom drivers were needed or if it would even work with newer versions of ESXi.


This topic has been popular amongst our customers who virtualize Apple MacOS on vSphere. In fact, several years back I had written an article on Thunderbolt Storage for ESXi, which includes a number of solutions that our customers have implemented to provide remote storage for their vSphere infrastructure running on either an Apple XServe, Mac Pro or Mac Mini. Questions around a functional Thunderbolt to 10GbE has definitely been asked about, but I had never heard from any customer who have had a successful story to share, at least until now.

From Karim's post, it looks like he was able to get this working using ESXi 6.0 but it was unclear if there was anything he needed to do to get the device recognized. I reached out to Karim and he was able to confirm that the Thunderbolt device was recognized by ESXi without any additional driver installation. In fact, if you look at this console output on his blog, you will see that it simply uses the inbox Intel ixgbe driver. I had also asked if Karim tried this with the latest version of ESXi, which is currently at 6.5 Update 1. Karim was kind enough to perform one additional test for me which was to confirm the device would still work with the latest ESXi release, which you can see for yourself in the screenshot below.

UPDATE (02/04/19) - Chad Moon recently shared his experiences on getting 10GbE support with an Intel NUC using the OWC Mercury Helios 3, Thunderbolt3 to PCIe expansion enclosure

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ATTO's ESXi Thunderbolt Driver is now officially on VMware HCL

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Last week I had received some great news from our friends over at ATTO Technology that their ESXi Thunderbolt to Fibre Channel Driver has passed the VMware Certification process and is now officially listed on VMware's HCL. I had known the team was planning to certify their driver but was not aware of their timelines and whether it would actually get accepted given the fact that this was for a Thunderbolt-based device, which is the first of its kind for the VMware HCL.

Funny enough, it was roughly around this time last year that ATTO released a Beta of their ESXi Thunderbolt to Fibre Channel Driver which I had shared with my readers here. I was not surprised by the demand given the fact that no official solutions exists for customers who would like to take advantage of their existing SAN-based storage infrastructure when virtualizing Apple macOS (iOS development, etc) on vSphere. ATTO has certified two of their ThunderLink devices, customers have the option of using either the TLFC2082 which provides 20Gb/s Thunderbolt 2 (2-port) to 8Gb/s FC (2-Port) Device or the TLFC2182 which provides 20Gb/s Thunderbolt 2 (2-port) to 16Gb/s FC (2-Port) Device which is supported from ESXi 5.5u3 all the way up to latest 6.5u1 release.


Click here for the direct link to VMware HCL.

Huge congrats to the ATTO team for getting this on the VMware HCL and partnering up with VMware to provide a solution for our customers who virtualize Apple macOS using vSphere!

Lastly, if you are going to be at VMworld and you are interested in learning more about this solution, be sure to drop by the ATTO booth.