Virtualization Explained

https://www.youtube.com/watch?v=UBVVq-xz5i0

What is virtualization in computing?

Virtualization is the process of simulating hardware and software, such as computers, operating systems, storage, and networking, in a virtual or software environment.

How does the traditional business operation setup differ from virtualization?

Traditionally, a business would have one machine for each application, while virtualization allows one server to run multiple applications and operating systems in a virtual environment.

What is a hypervisor?

A hypervisor is software that creates and runs virtual machines, allowing one machine to run multiple VMs by allocating and controlling the sharing of resources like storage space, RAM, and CPUs.

What are the two types of hypervisors?

The two types of hypervisors are Type 1, which is installed on bare metal hardware, and Type 2, which runs on top of an existing operating system.

What is a Type 1 hypervisor, and where is it commonly used?

A Type 1 hypervisor is installed directly on bare metal hardware without any existing operating system. It is commonly used in enterprise data centers.

What is a Type 2 hypervisor, and where is it commonly used?

A Type 2 hypervisor is installed on top of an existing operating system and is typically used on personal computers for testing software or different operating systems.

What is an example of a Type 1 hypervisor?

Examples of Type 1 hypervisors include VMware ESXi, Citrix XenServer, and Microsoft Hyper-V.

What is an example of a Type 2 hypervisor?

Examples of Type 2 hypervisors include Oracle VM VirtualBox, Microsoft Virtual PC, and VMware Workstation.

What are the benefits of virtualization in terms of cost?

Virtualization saves money on hardware and electricity because fewer physical machines are needed, and it also reduces the cost of floor space.

How does virtualization improve maintenance and management?

Virtualization reduces the need for maintaining multiple physical machines, as VMs can be easily managed, backed up, and transferred between machines.

Why is portability an advantage of virtualization?

VMs can be transferred quickly to another physical machine, making it easy to upgrade hardware or recover from failures.

How does virtualization utilize the full computing capability of a machine?

Virtualization can push a machine's capacity to its limit by creating multiple VMs, ensuring that the machine's full potential is used.

How does virtualization contribute to disaster recovery?

Virtual machines, as software files, can be backed up and uploaded to multiple physical machines, ensuring continuity if a machine fails.

What is the significance of using a Type 1 hypervisor in building a server?

A Type 1 hypervisor, like VMware ESXi, is installed on a bare metal server, allowing the creation and management of multiple VMs on the server without an existing operating system.

What is a common use case for Type 2 hypervisors?

Type 2 hypervisors are often used on personal computers to run multiple operating systems, like running Windows and Linux on a Mac.