Vsphere Client 6.7
VSphere 6.5 eliminated the vSphere Client that ran natively on Windows (also known as the C# Client or Thin Client) in favor of the vSphere Web Client, which was Flash-based. Also introduced in version 6.5 was the vSphere Client, which replaced Flash with HTML5. VSphere 6.7 further extends the capabilities of the vSphere Client and will.
With release of many enhancement to existing features and new features came. One of the efficient feature vSphere Quick Boot is available and I will be discussing about this feature in this post. VSphere Quick Boot is an innovation by VMware and this feature helps on restarting the ESXi hypervisor without rebooting underlying physical host. Quick Boot eliminates the time-consuming device initialization and self-testing procedures shortening the time. Not only the reboot, Quick Boot supports patching and upgrades of vSphere hosts through vSphere Update Manager. This functionality is only available for hosts that are running ESXi 6.7 with compatible Hardware.Even if your hardware is compatible with Quick Boot and you are running a legacy version of ESXi, this feature will not be available. If the system is incompatible with vSphere 6.7 Quick Boot, it will perform a regular reboot.
Vsphere Client 6.7 Html5
Supported Hardware Platforms Currently Dell and HP are the OEM hardware vendors supports this feature and you can find the supported servers details on below links • • With vSphere 6.7 a built in script available to test the hardware compatibility with ESXi Quick Boot. Script Path – /usr/lib/vmware/loadesx/bin/loadESXCheckCompat.py Detailed Information available on Verify the Host Compatibility Login to ESXi as root from putty or Console Verify the ESXi version and run the script Configure vSphere Quick Boot Configuring VMware ESXi 6.7 Quick Boot functionality must be done through VMware Flex client and Upgrades or Patching Can be done though HTML Client Navigate to Home > Select the vCenter Server and navigate to Manage – > Host/Cluster Settings You can see Quick Boot is not enabled, Click on Edit button go to configuration option. 
Select the Enable Quick Boot option by adding Tick on the box and Click OK After Enabling, Verify the Quick Boot Status. The Update Manager UI will present Quick Boot as an option for servers that support the feature, however for some servers this option will not be available and your host will perform regular reboot rather than a Quick Boot.