This video will look at the different types of virtualization available on the market referred to as type 1 and type 2. Understanding how these types work will give you a better understanding of which one you should use to meet your needs.
With Type 1 virtualization, the operating system and any virtual machines run through the same hypervisor. This makes it faster than type 2. In order for type 1 to work, special hardware requirements are required. For example, the CPU and BIOS need to support virtualization.
Type 1 & Type 2 Virtualization Examples
01:34 Type 1: Hyper-V and vSphere. The advantage of Hyper-V is that it can be run on the same computer running Windows. vSphere, in contrast, requires a dedicated computer that can only be used to run vSphere. Microsoft has also supplied a Hyper-V standalone version if you want to run Hyper-V on a dedicated computer.
Type2: Microsoft Virtual PC, Microsoft Virtual Server, VMWare Workstation and VirtualBox. The advantage of these is that they can be installed on Windows and do not require special hardware.
Hyper-V
02:20 Hyper-V is sometimes mistaken for a Type 2 virtualization solution. This is because unless you are using the stand-alone version, you require an operating system. Without the Hyper-V role installed, the operating system uses a HAL (Hardware Abstraction Layer) to access the hardware. When Hyper-V is installed, the HAL is replaced by a Hypervisor and the operating system and virtual machines access the hardware through the hypervisor. So essentially the hypervisor is a HAL with additional features required for virtual machines.
References
“Installing and Configuring Windows Server 2012 R2 Exam Ref 70-410” pg 132 – 133
“Hypervisor” http://en.wikipedia.org/wiki/Hypervisor
Credits
Installing and Configuring Windows Server 2012
