ESXi

Quick Tip – Crucial NVMe SSD not recognized by ESXi 6.7

05/19/2019 by William Lam 24 Comments

If you own or have recently purchased Crucial NVMe SSD such as CT1000P1SSD8 (1TB M.2 NVMe SSD) or CT500P1SSD8 (500GB M.2 NVMe SSD), please be aware that these devices may no be recognized by ESXi after upgrading to the latest release. Thanks to Pete Lindley, (OCTO for End-User Computing), who reached out last week regarding the observation as well as a workaround for the problem. This was also quite timely as I recently purchased a Crucial M.2 NVMe SSD and would have also ran into this problem.

It turns out these Crucial devices were working fine while running on ESXi 6.5 Update 2 but was no longer recognized in latest release of ESXi 6.7 Update 2. It is unclear whether support for these SSDs were removed intentionally or unintentionally, but in either case, these devices are not officially on VMware's Hardware Compatibility List (HCL).

UPDATE (05/23/19) - After speaking with a few folks who took a closer look, the issue is due to the fact that we added support for NVMe 1.3 spec in latest ESXi 6.7 Update 2 release, but because these are "consumer" devices, they did not conform to the latest specification and hence the driver is unable to claim the device. This is another good reminder when using components not on VMware HCL, this is always a risk from a home lab perspective. In general, I know Samsung and Intel NVMe SSD usually works quite well without issues but always good to do some research. I think Engineering is looking to see if there are other workarounds for the future, but for now, you can use the workaround below.

The easy workaround that Pete found was to simply replace the NVMe driver from ESXi 6.7 Update 2 (1.2.2.27-1vmw.670.2.48.13006603) with one found in ESXi 6.5 Update 2 (1.2.1.34-1vmw.650.2.50.8294253). To so do, simply copy nvme.v00 to /bootbank from either an existing ESXi 6.5 Update 2 system or directly from the ISO. Please note, any future updates or patches to the ESXi host will most likely override the updated driver.

New Thunderbolt 3 to 10GbE options for ESXi

04/17/2019 by William Lam 27 Comments

With the help from Aquantia, we now have an ESXi driver to enable the built-in 10GbE adaptor for both the Apple 2018 Mac Mini and the iMac Pro. Although this was exciting news for our VMware/Apple customers, I was actually more excited for what this development meant for the larger VMware Community when it comes to 10GbE accessibility.

Many Enterprise customers have already been using Thunderbolt 2/3 to access their 10 Gigabit infrastructure, usually over SFP+ but Ethernet based options also exists such as the Sonnet solution which I had shared last year. This is especially common for VMware customers who virtualize Apple MacOS on vSphere for MacOS/iOS development and the use of Thunderbolt enables ESXi to connect to the underlying storage and networking infrastructure, which traditionally has been either Fibre Channel and/or IP-based storage running over a 10Gig link.

When you start looking at 10GbE accessibility for VMware home labs which could potentially apply to remote office/branch office (ROBO) and Edge/IoT environments, the cost and the complexity of the setup is something that many folks have to consider. There are definitely some creative options out there, most recently Chad Moon shared his solution using a Thunderbolt 3 to PCIe expansion chassis with his Intel NUCs which will run you about $230 per setup or you can be a true hardware hacker like Jack Harvest and use one of the M.2 slots in the Intel Skull Canyon NUC and connect that to PCIe 10GbE SFP+ card with a custom 3D printed chassis to hide everything for just $43.68 🙂

vSphere 6.7 Update 2 add support back for Apple Mac Pro 6,1

04/11/2019 by William Lam Leave a Comment

Last fall, support for vSphere 6.7 Update 1 on the Apple Mac Pro 6,1 was removed by VMware after finding out an updated version of the Apple Firmware prevented ESXi from booting up properly after upgrading. After some investigation and troubleshooting with several customers, VMware Engineering found a solution to workaround the problem and that fix is included in the latest vSphere 6.7 Update 2 release. As mentioned in the original blog post, this could also impact Apple Mac Mini's, which are not officially supported by VMware, but the fix should also apply to the Mac Mini.

In addition, the VMware HCL will also be updated shortly to reflect support for both vSphere 6.7 Update 2 along with the existing vSphere 6.7 support. For customers that have been waiting for features in vSphere 6.7 Update 1, you can finally upgrade to the latest release to get all the new features and benefits of vSphere.

Aquantia 10GbE ESXi Driver for Apple 2018 Mac Mini

04/10/2019 by William Lam 10 Comments

I know many of you have been anxiously waiting for ESXi to be fully functional on the latest Apple Mac Mini (2018), unfortunately I do not have any news to share with you on that front. Without help from Apple, we are still challenged with Apple's new T2 chip, which prevents us from accessing the underlying NVMe device.

Having said that, I do have some exciting news regarding the built-in 10Gigabit Ethernet adaptor on the 2018 Mac Mini. The 10GbE adaptor uses an Aquantia chipset, this is also the same chipset used in Apple's high end iMac Pro which was released earlier in the year. Over the past few weeks, I have been working with the Aquantia team and they have successfully ported over their open source Atlantic driver to a VMKlinux driver for ESXi, which they have published here. Although the local NVMe device can not be used to run any VMs, with the network fully enabled, customers could take advantage of this model and connect to IP-based storage to start leveraging the new Mac Mini platform.

The easiest way to incorporate the driver into the latest ESXi release is to use Image Builder within the vSphere H5 Client UI, below are the step-by-step instructions.

ESXTOP and VMware Cloud on AWS

03/26/2019 by William Lam 6 Comments

ESXTOP is one of the most versatile and popular tool in the VI Administrators tool belt when it comes to real time performance analysis and data collection in a vSphere environment. In fact, ESXTOP also came up in the most recent episode of the VirtuallySpeaking Podcast covering the Top 10 Tools for VI Administrators, which Duncan Epping and I had the pleasure to be part of.

To use ESXTOP, you are required to SSH to an ESXi host as it is only available in the ESXi Shell. Traditionally, this has not been a huge issue for on-premises environment, especially as you can enable access when you needed to run ESXTOP. However, when operating on VMware Cloud on AWS (VMC), customers no longer have to worry about managing the underlying infrastructure and can now focus on being a consumer of the VMware SDDC. One side affect of this operational change is that customers do not have direct access to ESXi and would not be able to use ESXTOP.

64GB memory on the Intel NUCs?

03/14/2019 by William Lam 33 Comments

I just got my hands on a pair of 32GB SODIMM memory modules (64GB total) which I had been waiting to evaluate since last Fall. Apparently, it has taken some time for these high capacity memory modules to be readily available in the consumer market. Even after the announcement of the new 2018 Apple Mac Mini last year, which officially supports 32GB SODIMMS, I was not aware of any vendors who were selling these modules direct to consumers.

My primary interests in these memory modules was whether they would work on the latest Intel NUCs, specifically the Hades Canyon (NUC8i7HNK) which are the prosumer versions of the standard Intel NUCs that many folks use for vSphere Home Labs. Both the standard and Skull/Hades Canyon NUCs all officially support a maximum of 32GB of memory (2x16GB SODIMM), however it been hypothesized by the community that they *should* in theory be able to go up to 64GB, especially as some of the newer CPUs technically state support for it.