vSphere 6.0

vSphere 6.0 has been released.  Major release of VMware vSphere platform has been released. vSphere 6.0 is Generally Available (GA). VSAN 6.0 which comes in two flavours, Hybrid or All-Flash configurations. The latter one can leverage SSDs for storage capacity.

vSphere 6 Configuration Maximums 

  • 64 hosts per cluster (vSphere 5.x it was 32)
  • 8000 VMs (previously 4000)
  • 480 CPUs (vSphere 5.x it was 320 CPUs)
  • 12 TB of RAM (vSphere 5.x it was 4 TB of RAM)
  • 1024 VMs per host (vSphere 5.x it was 512 VMs)
  • 2048 virtual CPUs per host

From VM perspective

  • Virtual hardware version 11 (vmx-11)
  • 128vCPUs
  • 4TB of RAM (NUMA aware)
  • VDDM 1.1 GDI acceleration
  • xHCI 1.0 controller compatible with OS X 10.8 + xHCI driver.

FT Features

  • 4vCPU VMs can be protected by FT
  • VMs with up to 64Gb of RAM
  • Up to 4 FT protected VMs per host
  • Hot configured FT possibility
  • Enhanced virtual disk format support
  • VADP support (can backup FT protected VMs now. Previously not possible)

VMware vSphere 6 introduces vCenter Server 6 which, again, exists in two different platforms – Windows or Linux (SLES based VCSA). This time however the vCenter Server VCSA based virtual appliance offers equal functions than Windows based vCenter server.

Linux based VCSA has (almost) all functions than Windows based vCenter server 6.

Configuration Maximums vCenter Server 6 on Windows or Linux based VCSA:

  • Host Per VC – 1k
  • Powered on VMs Per VC- 10k
  • Host per cluster- 64
  • VMs per cluster- 6k
  • Linked Mode- 10
  • IPv6 Support- Yes
  • SRM- Yes
  • Power CLI- Yes

vCenter server on Linux is on SLES SP3 (Suse Linux Enterprise Server). It’s bundled with vPostres database, pre-installed.


vSphere 6 Features – vSphere Client
The new Web client however is much faster. For example if you remember the login speed in version 5.0, 5.1 or 5.5, that the login speed was increased 13 times.
Speed increase is actually same as in Windows client

Web client has changed


 ESXi 6.0 Security and Password Complexity Changes

ESXi introduces new ESXCLI commands to manage local accounts. Those commands can add, list, modify or remove users across all hosts in a cluster through vCenter server. Functionality previously only available through direct connection to a host.
Permisson management can now also be done centrally – settings, removing, listing local permissions on ESXi servers.
Account Lockout – new settings (two of them) which are in ESXi Host Advanced System Settings for the management of local account failed login attempts and account lockout duration. These parameters affect SSH and vSphere Web Services connections. The direct access to the console (DCUI) and console shell access are not affected.
Password Complexity Rules – change here where In previous versions of ESXi, password complexity changes had to be made by hand-editing the /etc/pam.d/
passwd file on each ESXi host. In vSphere 6.0 now this can be done by adding an entry in Host Advanced System Settings, enabling centrally managed setting changes for all hosts in a cluster.




vSphere 6 – How To Backup vCenter 6 vPostgres Database – On Windows