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
- 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
- Flexible lockdown mode
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
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.
- Cross vSwitch vMotion
- Cross vCenter vMotion
- Long Distance vMotion
(We will discuss this in details on upcoming blog)
- 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
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