vSphere 6.0 – What is new in vSphere 6?

VMware vSphere 6.0 introduced many enhancements to VMware vSphere Hypervisor, VMware virtual machines, VMware vCenter Server, virtual storage, and virtual networking.

vSphere is still the industry-leading virtualization platform and the foundation for the Software Defined Data Center (SDDC). There are some very exciting new features that has been added to vSphere 6.0.

vSphere 6 High-Level Architectural Overview

Here is the High-level Architectural Overview of vSphere 6.


New Features and Enhancements

ESXi Enhancements:

  • Scalability improvements
    • Maximum cluster size increased to 64 hosts
    • 8000 virtual machines per cluster
    • 480 physical CPUs per host
    • 12 TB of RAM per host
    • 1000 virtual machines per host
  • Security enhancements
    • Flexible lockdown mode
      • Lockdown mode disabled the Direct Console User Interface (DCUI) and was inflexible. It has been enhanced to include a white list for user access
    • ESXi user accounts can be centrally managed with VMware vCenter and ESXCLI commands
    • Account lockout and account lockout duration added for management of failed login attempts to ESXi
    • Password complexity rules added
    • Improved auditability of ESXi administrator actions
    • Smart card authentication to the DCUI

Virtual Machine Scalability:

  • Virtual Machine Hardware Version 11 introduced for vSphere 6.0, which adds support for
    • 128 vCPUs in a virtual machine
    • 4 TB of RAM in a virtual machine
    • WDDM 1.1 GDI acceleration
    • A USB 3.0 xHCI controller
  • vNUMA enhanced for hot-add memory allowing memory to be properly allocated across NUMA nodes
  • Serial and parallel ports improved with Virtual Machine Hardware Version 11
  • Removal from a VM possible
  • Maximum number of ports increased to 32
  • Expanded guest OS support
  • Adds support for Oracle Unbreakable Enterprise Kernel R3 QU3, Asianux 4 SP4, Solaris 11.2, Ubuntu 12.04.5 and 14.04.1, Oracle Linux 7, FreeBSD 9.3, and Mac OS X 10.10

Scalability :

VMware ESXi 6.0 has dramatically increased the scalability of the platform. Below is the vSphere 5.5 and vSphere 6 scalability comparison chart.


vCenter Server improvements:

The great news is that, the vCenter virtual appliance and the windows vCenter Server has the same features, meaning the scalability and feature set of both vCenter versions are identical.


vMotion Enhancements:

  • Cross vSwitch vMotion
  • Cross vCenter vMotion
  • Long Distance vMotion

(We will discuss this in details on upcoming blog)


  • vSAN
  • Virtual Volumes (VVol)
  • improved Storage IO Control

VMware Virtual SAN (VSAN 6.0)

  • new On-Disk Format
  • Performance Snapshots – vsanSparse
  • usability improvements
  • supports Failure Domains (note: failure domains are NOT metro/streched clusters)
  • new disk serviceability feature

I hope this is informative for you. Thanks for Reading!!!. Be Social and share it in social media, if you feel worth sharing it.