vitual cloud
DESCRIPTION
this is use to mca studentsTRANSCRIPT
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By B.P.SREEJITH VIGNESH
(LECTURER) SRI VENKATESWARA COLLEGE OF COMPUTER
APPLICATIONS & MANAGEMENT.COIMBATORE.
CLOUD COMPUTING
TECHNOLOGIES ON
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EMERGENCEIt’s a long way of Computing scenario
SCIENCE for KNOWLEDGE
SCIENCE for SOLUTIONS
Virtualization
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Perspective
What is Virtualization?
• Virtualization means splitting up a single physical computer into several “virtual” computers.
• Each virtual operating system is a called a virtual machine(vm's) which is just a collection of files on a physical machine.
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WHY VIRTUALIZATION
ConsolidationRedundancySegregationLegacy HardwareMigration
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Virtualization -- a Server for Multiple Applications/OS
Hardware
OperatingSystem
Applications
Hardware
Hypervisor
Hypervisor is a software program that manages multiple operating systems (or multiple instances of the same operating system) on a single computer system. The hypervisor manages the system's processor, memory, and other resources to allocate what each operating system requires. Hypervisors are designed for a particular processor architecture and may also be called virtualization managers.
OperatingSystem
Applications
OperatingSystem
Applications
OperatingSystem
Applications
OperatingSystem
Applications
OperatingSystem
Applications
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CONCEPTUALIZATION
TRADITIONAL SERVER
CONCEPT◦ Expensive to acquire and
maintain hardware◦ Not very scalable◦ Difficult to replicate◦ Redundancy is difficult to
implement◦ Vulnerable to hardware
outages◦ In many cases, processor is
under-utilized
VIRTUAL SERVER CONCEPT
◦ Highly redundant◦ Highly available◦ Rapidly deploy new
servers◦ Easy to deploy◦ Reconfigurable while
services are running◦ Optimizes physical
resources by doing more with less
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The Virtualization TypesServer Virtualization
Storage Virtualization
Network Virtualization
Application Virtualization
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Popular hypervisorsXenKVMQEMUvirtualBoxVMWare
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Issues in Virtualization for Cloud-Computing Software deployment
◦ Open-source◦ Commercial products◦ Re-installation or not
Compatibility ◦ Legacy software/database
virtualized resources as a service over the Internet.
Virtualization
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CLOUD COMPUTING
Cloud computing is Internet-based computing, whereby shared resources, software and information are provided to computers and other devices on-demand, like electricity.
you pay-as-you-go and use only what you need, all managed by a browser, application or API.
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LAYERS
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Software delivery model
No hardware or software to manageService delivered through a browserCustomers use the service on demandInstant Scalability
SaaS
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Platform delivery model
Platforms are built upon Infrastructure, which is expensive
Estimating demand is not a science!Platform management is not fun!
PaaS
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Infrastructure delivery model
A platform virtualization environment
Computing resources, such as
storing and processing capacity. Virtualization taken a step
further
IaaS
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• Private Cloud (a.k.a. Internal Cloud)– enterprise owned or leased
• Public cloud (a.k.a. External Cloud)– Sold to the public, mega-scale infrastructure
• Hybrid cloud– composition of two or more clouds
Cloud Deployment Models
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Difference
Virtualization Virtualization is creating
virtual versions of technologies like servers, operating system, network resources &storage
devices. In virtualization, either its
one operating system using multiple computers to evaluate database or a single computer controlling several machines
Cloud Computing
Cloud Computing make use of virtualized resources such as servers, computing devices and networks
In Cloud Computing a database can be physically located somewhere in secure remote location and data can be accessed through clients computer using the database server to analyze and recover the data.
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BENIFITS
Reduction in cost of infrastructure. Enhances flexible functionality of
management.High accessibility of applications
and data.Improves system compliance.Improved System Reliability and
Security.
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ADOPTERS
desktone Virtual Cloud model
Microsoft Virtual Environment
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QUERIES