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Update on Intel NUC 7th Gen (Kaby Lake) & ESXi 6.x

02.15.2017 by William Lam // 28 Comments

Intel just started shipping their i3 7th Gen (Kaby Lake) Intel NUCs and no surprise, Florian of virten.net has already gotten his hands on a unit for testing. The Intel NUCs is a very popular platform for running vSphere/vSAN-based home labs, especially for their price point and footprint. Last week, Florian discovered from his testing that the built-in network adapter on the 7th Gen NUC was not being detected by any of the ESXi installers and had published his findings here.

Since the Intel NUC is not an officially supported platform for ESXi, it does not surprise me that these sort of things happen, even if the NUC had a pretty good track record going back to the 5th Gen releases. Nonetheless, I reached out to Florian to see if he can provide me with a vm-support bundle and see if there was anything I could do to help.

A couple of Engineers took a look and quickly identified the issue with the Kabylake NIC (8086:15d8) but before getting to the solution, I did want to clarify something. The Kabylake NIC is actually NOT an officially supported NIC for ESXi and although it currently shows up in the VMware HCL, it is a mistake. I have been told the VMware HCL will be updated shortly to reflect this, apologies for any confusion that this may have caused.

Ok, so the great news is that we do have a solution for getting ESXi to recognize the built-in NIC on the 7th Gen Intel NUCs. The semi-bad news is that we currently do not have a solution in the short term for any released version of ESXi, as the fix will require an updated version of the e1000e Native Driver which will only be available in a future update of ESXi. I can not provide any timelines, but keep an eye on this blog and I will publish more details once they are available.

In the meantime, if you already own a 7th Gen NUC, there is a workaround which Florian has already blogged about here which uses the USB Ethernet Adapter VIB for the initial ESXi installation. If you are planning to purchase the 7th Gen NUC and would like to wait for folks to confirm the fix, then I would recommend holding off or potentially looking at the 6th Gen if you can not wait. Thanks to Florian and others who shared their experiences with the 7th Gen NUC and also to the VMware Engineers who found a quick resolution to the problem.

UPDATE (07/27/17) - The updated e1000e Native Driver that was included in ESXi 6.0 Update 3 is now included in ESXi 6.5 Update 1 which just GA'ed. You should be able to install ESXi without require any additional modifications to the latest Intel NUCs.

UPDATE (02/24/17) - An updated e1000e driver which contains a fix for 7th Gen NUC is now available as part of ESXi 6.0 Update 3, below are several options in how you can consume the driver.

[Read more...]

Categories // ESXi, Home Lab, Not Supported, vSphere 6.0, vSphere 6.5 Tags // Intel NUC, Kaby Lake, ne1000, ne1000e, vSphere 6.5

Copying files from a USB (FAT32 or NTFS) device to ESXi

01.24.2017 by William Lam // 14 Comments

It is not uncommon, especially in troubleshooting scenarios where you might find yourself needing to transfer files to or from an ESXi host using a USB device as it may not be reachable on the network. Another common case for directly attaching a USB device to an ESXi host is to transfer a large amount of Virtual Machines that were exported from another system and rather than streaming the content from your desktop, you may want to connect it directly to ESXi host. In fact, I had this very use case when I was a customer after we had acquired a company and needed to transfer their assets to our infrastructure. The IT admins just copied everything onto a USB device and then shipped us the drive for processing.

Historically, it was understood that ESXi could only access a USB device (requires disabling the USB arbitrator service) if it contains a FAT16 partition which are then automatically mounted under the /vmfs/volumes/ path. The biggest issue with FAT16 is that the size of the partition has to be <=2GB which severely limits its use for larger files. Another alternative that came up in recent years years is that you could run VMFS on a USB device, but that obviously would require you to format the USB device with VMFS and it would only be readable between ESXi hosts. If you were looking for something more generic like FAT32 which supports a larger partition size, it was assumed this was not possible, at least I was under that impression.

It was only recently as part of a project I had been working on where I was re-visiting this topic that I had discovered that other partition types such as FAT32 and even NTFS from a USB device could actually be accessed by ESXi 6.x. The assumption that I and probably others had made was that just because the partitions were not visible or mounted by ESXi, it does not mean the underlying USB device would also not be accessible. To access a FAT32 partition from a USB device in ESXi, you can use the mcopy utility from the ESXi Shell and for accessing an NTFS partition from a USB device in ESXi, you can use ntfscat utility. It actually took me some trial/error to get the correct syntax, but you can see how to use the utilities below.

[Read more...]

Categories // Automation, ESXi, Home Lab Tags // ESXi, ESXi 6.0, ESXi 6.5, fat16, fat32, ntfs, usb

Functional USB-C Ethernet Adapter for ESXi 5.5, 6.0 & 6.5

01.22.2017 by William Lam // 23 Comments

While attending an offsite this week, there were some discussions amongst my colleagues about their new Apple Mac Pro and its USB-C only ports. The discussion was completely unrelated to work, however that did get me thinking about the USB-C peripheral market and specifically their ethernet adapters. While searching online, I came across several new USB-C to gigabit ethernet adapters that were now available and one in particular that was very interesting, was the Plugable USB-C to 10/100/1000 Gigabit Ethernet LAN Network Adapter. What caught my eye about this specific network adapter was that it uses the exact same ASIX AX88179 driver as my USB 3.0 to Ethernet Adapter ESXi VIBs were built off of! There was a good chance this might just work.


As you can probably guess, I was pretty excited and quickly ordered one of the Plugable USB-C Ethernet Adapters. The next challenge was getting access to a system that has a USB-C port. After asking around, I finally got my hands on a Dell XPS 13 which has a USB-C port that I could use for a few days. Funny enough, the Dell laptop only has USB 3.0 and USB-C ports, so the first challenge was to disable Secure Boot since I had built a custom ESXi 6.5 image that included my USB 3.0 Ethernet Adapter VIB. Below are the ESXi VIBs or offline bundles that will be required for this solution.

UPDATE (02/12/19) - A new VMware Native Driver for USB-based NICs has just been released, please use this driver going forward.

  • ESXi 5.5 Update 3 USB Ethernet Adapter Driver VIB or ESXi 5.5 Update 3 USB Ethernet Adapter Driver Offline Bundle
  • ESXi 6.0 Update 2 USB Ethernet Adapter Driver VIB or ESXi 6.0 Update 2 USB Ethernet Adapter Driver Offline Bundle
  • ESXi 6.5 USB Ethernet Adapter Driver VIB or ESXi 6.5 USB Ethernet Adapter Driver Offline Bundle

Please see this blog post for more detailed instructions on installing the VIB as well as accessing the vusbX pNIC.

Disclaimer: This is not officially supported by VMware. Use at your own risk.

Once I got ESXi up and running, I was disappointed to see that the USB-C device was not being detected. I had tried a few more things but nothing worked and I decided to sleep on it. The next morning, I realize maybe there was some additional settings that needed to be tweaked in the BIOS. With a bit of trial/error, I found out that you needed to enable the "Thunderbolt Boot Support" which apparently is disabled by default, at least on this Dell system. Below is a screenshot of the BIOS USB/Thunderbolt Settings and this was the only change required from the system defaults.


Once I rebooted, I immediately saw the link up on the USB-C device while ESXi was starting up 😀

[Read more...]

Categories // ESXi, Home Lab, vSphere 6.0, vSphere 6.5 Tags // ESXi 5.5, ESXi 6.0, ESXi 6.5, thunderbolt 3, usb ethernet adapter, usb network adapter, USB-c, vSphere 5.5

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William is Distinguished Platform Engineering Architect in the VMware Cloud Foundation (VCF) Division at Broadcom. His primary focus is helping customers and partners build, run and operate a modern Private Cloud using the VMware Cloud Foundation (VCF) platform.

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