cto: virtualization
TRANSCRIPT
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Virtualization
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cloud computing depends on virtualization
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do you know…
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what it is?
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why it is good?
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if you should be using it?
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What virtualization is.
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replication, emulation and provisioning of a physical IT resource through software
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popular virtualized resources:
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servers
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storage
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networks
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all software has to ultimately run on hardware, so what do we mean?
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specialized virtualisation software interfaces between physical hardware and a self contained software version
of a resource
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What makes it good.
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hardware independence
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as the virtual resource does not interface with the hardware – it emulates and standardizes
resources through software based copies
making it hardware independent
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which means moving virtual resource to a different physical resource, cloning, copying
or manipulating virtual resources is easy
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server consolidation
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virtualization allows for one physical resource to host many virtual resources
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through load balancing and optimization capabilities of the virtualization software hardware resources can be optimized
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operational agility
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the virtual resource is software; stored as a binary file known as a Virtual Disk Image. Like documents these files can be copied,
moved, saved and deleted. Which means…
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pre-packaged resources and applications can be instantaneously deployed
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the ability to rapidly manipulate and deploy
virtual resource provides the business the agility to quickly scale out and up
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business continuity
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resources being virtual disk images allows for snapshot backups, along with instantaneous
deployment, a sound business continuity strategy facilitates…
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instantaneous roll back and restore
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high redundancy architecture
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Should you be using it already?
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for you to consider if you should use virtual resources, let us discuss the down
sides to virtualization
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physical resource performance inefficiencies: the virtualisation software
and host operating system consume physical resource which is then not
available to the virtual resources e.g. processor and memory
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latency performance inefficiencies: physical hardware resource calls from the virtual resource have to go through the
virtualisation software and host OS
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cost inefficiencies: additional to the host OS license, each virtual resources may
also require a license
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to combat these inefficiencies there is an option for ‘Hardware-based
virtualization’, but this impacts on the benefits of hardware independence
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therefore virtualization may not suited to:
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high workload systems with limited requirements for physical resource
sharing or scaling
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however if virtualization is suited to you…
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it is likely that cloud based virtualisation is right for you
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What do you think? Contact CTO for a freeconsultation to find out how the cloud and
virtualization can benefit you
tel: 0044 (0)20 3478 9049