vSphere 6.5 Update 1 released


VMware released vSphere 6.5 Update 1 enforcing the product stability and allowing customers who are on vSphere 6.0 Update 3 to upgrade to vSphere 6.5.

All patches available since the release of vSphere 6.5 have been included in the Update 1.


What's new

Upgrade from vCenter 6.0 U3

Upgrade and migration to vSphere 6.5 is now supported also for vSphere 6.0 Update 3. If you are running vSphere 5.5, you need to be at least on vSphere 5.5 Update 3b in order to upgrade to vSphere 6.5 Update 1.



3rd party switch support removed

Customers using 3rd party virtual switches such as the IBM DVS 5000v, HPE 5900v, and Cisco Nexus 1000v will need to migrate off of those switches prior to upgrading to any future release. Additional info can be found in the VMware knowledge base.


Hardware support

VMware extended the hardware support for vSphere 6.5 Update 1 adding full support for ESXi on MacPro 6,1 hardware to virtualize mac OS in an officially supported manner.


vCenter Server

Configuration maximum

Update 1 brings some enhancement in the vCenter Server increasing the number of supported vSphere Domains (SSO).

  • Maximum vCenter Servers per vSphere Domain: 15 (previously 10)
  • Maximum ESXi Hosts per vSphere Domain: 5000 (previously 4000)
  • Maximum Powered On VMs per vSphere Domain: 50,000 (previously 30,000)
  • Maximum Registered VMs per vSphere Domain: 70,000 (previously 50,000)


vCenter Server Foundation now support 4 hosts

In vSphere 6.5 Update 1, VMware is now increasing the number of hosts that vCenter Server Foundation will support from 3 host to 4.


Extended the general support

VMware has extended the general support for vSphere 6.5 for a full 5 years. Support for vSphere 6.5 will now end November 15, 2021.


vSphere Client

The HTML5-based client (accessed via https://<vcenter>/ui) is faster, lighter and requires no plugins to run.

With Update 1 the client increased the functionality in areas related to Virtual Distributed Switch (VDS) management, datastore management, and host configuration getting about 90% of general workflows completed.



VUM integration

vSphere Update Manager (VUM) has been integrated into vSAN providing an automated update process to ensure a vSAN cluster is up to date with the best available release to keep your hardware in a supported state using information from the VMware Compatibility Guide, the vSAN Release Catalog, and awareness of the underlying hardware configuration.



Licensing Editions

VDI and ROBO licensing editions are expanded with the Enterprise edition that allows encryption and stretched clusters.


For additional info check out the vSphere 6.5 Update 1 Release Notes.