Hardware virtualization allows multiple operating systems to run on a single machine using a virtual machine manager (VMM) or hypervisor. The hypervisor creates virtual machines as guest machines that run on the host hardware. Full virtualization completely simulates the hardware, allowing unmodified guest operating systems. Partial virtualization simulates some but not all of the target environment, requiring some guest programs to be modified. Hardware virtualization disaster recovery environments use hardware and software protection based on business continuity needs, including tape backup for long-term data archiving and whole file or application replication to another disk. While virtualization reduces IT infrastructure complexity through better resource utilization, it still requires purchasing and maintaining servers and software.

1. By : SANOJ<mu10co13>

2. What is Virtual?
What is Virtualization?
What is Hardware Virtualization?

3.  Hardware virtualization allows to run several
operating systems on a unique machine. This is
done due to a specific software called “Virtual
Machine Manager” (VMM).
 In hardware virtualization there are two things:
 Host machine
 Guest machine
-The software that creates a virtual machine on the
host hardware is called a hypervisor or Virtual
Machine Manager.

5.  Full Virtualization:
Almost complete simulation of
the actual hardware to allow
software, which typically consists
of a guest operating system, to run
unmodified.

6.  Some but not all of the target environment is
simulated. Some guest programs, therefore,
may need modifications to run in this virtual
environment.

7.  A hardware virtualization DR environment
will involve hardware and software
protection solutions based on business
continuity needs

8. Tape backup for software data long-
term archival needs This common method
can be used to store data offsite but can be a
difficult and lengthy process to recover your
data. Tape backup data is only as good as the
latest copy stored. Tape backup methods will
require a backup device and ongoing storage
material.
Whole-file and application
replication The data is replicated on a
different disk partition or separate disk device
and can be a scheduled activity for most servers
and is implemented more for database-type
applications.

9.  Virtualization lets you reduce the complexity
of your IT infrastructure by maximizing the
utilization of your physical computing
resources. But you still need to purchase and
maintain servers and software.
 Pros
 Real time sharing
 Testing and learning
 Portable
 Cons
 Resource hungry.
 Not compatible