In general, virtual means the quality of effecting something
without actually being that something. In information technology, there seems
to be a virtual version of (virtually) everything.
Virtualization in computing is a term that refers to the various
techniques, methods or approaches of creating a virtual (rather than actual)
version of something, such as a virtual hardware platform, operating system
(OS), storage device, or network resources.
Effect To the World
In
the physical world, a server hardware failure typically would mean
one server failed and backup servers would step in to prevent downtime.
The
Companies looking to ensure top performance of critical applications often
dedicate server, network and storage resources for those applications,
segmenting them from other traffic to ensure they get the resources they need.
Tools
and processes used to address the physical environment can’t be directly
applied to the virtual world, so many IT shops will have to think about
standardizing how they address issues in the virtual environment.
The Effect of Virtualization on Networking
Virtualization
offers a host of benefits, but it also increases complexity. A new depth of
understanding is required, particularly in configuring virtualization hosts to
maximize reliability, bandwidth, and ease of management. With proper
configuration, virtual servers can enjoy the same basic network resources as
physical servers did in days gone by.
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