Video Content
Hardware virtualization is a technology that allows multiple virtual machines (VMs) to run on a single physical machine, each with its own operating system (OS) and applications, as if they were separate physical machines.
1. **Hypervisors**:
– These are software or firmware that creates and runs virtual machines. There are two types:
– Type 1 (bare-metal): Installed directly on the physical hardware, like VMware ESXi or Microsoft Hyper-V. They offer better performance and are often used in server environments.
– Type 2 (hosted): Installed on top of an existing operating system, like VirtualBox or VMware Workstation. They are simpler to set up but may have some performance overhead.
2. **Machine Images**:
– A machine image is a single file or set of files used to create a virtual machine. It includes the OS, applications, and data needed for the VM to function.
– Images can be created from scratch or by cloning an existing VM. They are stored in a repository and deployed when needed.
3. **Virtual Machines (VMs)**:
– These are the instances created by the hypervisor. Each VM runs its own operating system and applications.
– VMs share physical resources like CPU, memory, and storage but are isolated from each other.
Overall, hardware virtualization allows for better resource utilization, flexibility, and scalability in IT infrastructure by enabling the creation of multiple independent virtual environments on a single physical machine.
OUTLINE:
00:00:00 Introduction to Virtualization
00:00:41 The Role of Hypervisors
00:01:16 Understanding Machine Images
00:01:36 Virtual Machines in Action
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