VIRTUALIZATION
Virtualization
is the process of creating virtual versions of physical components. It reduces
IT expenses and boosts the liveliness. It enables multiple operating systems
and applications to be run on a single server and consolidates hardware. It
provides an abstraction layer for physical storage resources to be managed optimized
in a virtualization deployment. This increases mobility of applications and
allows migration to any server in the environment with minimal downtown.
Benefits of Virtualization
- Reduce capital and operating costs.
- Minimize or eliminate downtime.
- Increase IT productivity, efficiency,
agility and responsiveness.
- Provision applications and resources
faster.
- Enable business continuity and disaster
recovery.
- Simplify data center management.
- Build a true Software-Defined Data Center
Server Virtualization:
Using
server virtualization, multiple operating systems can run on a single physical
server as virtual machines, each with access to the underlying server’s
computing resources. Each VM in the host is unaware of the other VMS that exist
within the same host.
Network Virtualization:
Network virtualization
is the process of combining hardware and software network resources and network
functionality into a single, software-based administrative entity, a virtual network. Network Virtualization is the
complete reproduction of a physical network as software.
Storage Virtualization:
Storage virtualization
is the pooling of physical storage
from multiple network storage
devices into what appears to be a single storage device that is managed from a central console. It provides
an abstraction layer for physical storage resources to be managed optimized in
a virtualization deployment.
Application virtualization:
Application virtualization is software technology that encapsulates
computer programs from the underlying operating system on which it is executed.
It increases mobility of applications and allows migration to any server in the
environment with minimal downtown.
Desktop Virtualization:
Desktop virtualization
is software technology that separates the desktop environment and associated application software from the
physical client device that is used to access it. Virtualized desktops
applications help reduce costs and increase service.
Virtual Machine
A
virtual machine (VM) is an operating system or application environment
that is installed on software, which imitates dedicated hardware. The end user
has the same experience on a virtual machine as they would have on dedicated
hardware.
Benefits of Virtual Machines
·
Multiple applications
on each host
·
Maximum host utilization,
Minimum host count
·
Faster and easier
provisioning of applications and resources
Hypervisor
Hypervisor
provides the virtual hardware and physical resources on which you can create
virtual machines.
There are two types of hypervisors.
Bare-Metal (Type 1 or native): These
are installed on a physical device without an operating system. They perform
the functions of the operating systems and have resource management
capabilities.
Hosted (Type 2): They operate as an application on top of a
pre-existing operating system.
Difference
between virtualization and cloud computing
- Virtualization is a technology that separates functions from
hardware
- Cloud computing is more of a solution that relies on that
split
ie, virtualization
is software that manipulates hardware, while cloud computing refers to a
service that results from that manipulation. Virtualization is a foundational
element of cloud computing and helps deliver on the value of cloud computing.
