Desktop Virtualization Notes

Virtualization: It is a technology that allows multiple operating systems to run on a single computer, each in its own virtual machine.
Virtual World: An example is Second Life, where users can explore a virtual environment with avatars.
Virtual Reality (VR) and Augmented Reality (AR): Technologies that create immersive digital experiences.
Storage Virtualization: Abstracts the physical storage, creating logical storage volumes.
Network Virtualization: Abstracts the network resources, allowing for flexible network configurations.
Server Virtualization: Enables multiple virtual servers to run on a single physical server.
Desktop Virtualization: Allows users to access virtual desktops from a central server or locally.
Virtual Machine (VM): A software-based emulation of a computer system.
Application Virtualization: Allows applications to run in an isolated environment.

Dumb Terminal: A monitor and keyboard connected to a central computer, lacking processing capabilities.
Terminal Services: Allows users to access applications and data on a remote server.
Terminal Client: Software that enables a device to connect to a terminal server.

Server-Based Virtual Desktops
- Thin Client: A dedicated terminal or PC with client software.
  - Lacks common peripherals.
  - Connects to a server.
  - User works in a server-hosted environment.
- Virtual Desktop Infrastructure (VDI): Management of multiple virtual desktops.
Local Virtual Desktops
- Host OS: The operating system installed directly on the hardware.
- Guest OS: The operating system running inside a virtual machine.
Type I and Type II Hypervisors
- Hypervisor (Virtual Machine Monitor - VMM): Software layer that manages hardware allocated to virtual machines.
- Type I Hypervisor (Bare-Metal Hypervisor): Runs directly on the computer's hardware.
- Type II Hypervisor: Runs within a host OS.
  - Host OS runs in a VM.
  - Each client OS runs in a separate VM.

Hyper-V: A desktop virtualization feature of Windows.
- Type I Hypervisor.
- Includes Windows To Go.
- Available in Pro and Enterprise Editions.
- Requirements:
  - 4 GB RAM.
  - CPU with SLAT (Second Level Address Translation).

Physical Switch: A device that connects networked computers and devices.
Virtual Switch: A simulated switch that connects VMs to a network.
Types of Virtual Switches
- External Switch
  - VMs access the physical network.
  - VMs access other VMs on the same switch.
  - VMs access the host computer.
- Internal Switch
  - No access to the physical network.
  - VMs access other VMs on the same switch.
  - No access to the host computer.
- Private
  - No access to the physical network.
  - VMs access other VMs on the same switch.

Quick Create: A Hyper-V utility to quickly create and launch a virtual machine.
- Preconfigured.
- Includes a selected client OS.
- Can be launched from Windows Administrative Tools or Hyper-V Manager.