VMware is making a lot of great progress with vSAN. One of the biggest pain points with the technology is the daunting HCL. VMware spends a lot of time working with hardware vendors to validate the various hardware and firmware versions with vSAN. In the past this meant manually checking to verify you were running on the right firmware version. Now with vSAN 6.6 it will automatically check if your running the correct firmware version, and if not you can download and install the firmware automatically. I found one simple issue with this. The buttons are not very clear about what they do. As you can see from the below image it looks like those buttons would refresh the page. The arrow points to the button that “updates all”. By selecting that it will apply the update to all your host. You can do this to all at once or through a rolling update.