Hypervisor-Based Server Virtualization, Data Centers, Container-Based Virtualization

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Table of Contents
Introduction.................................................................................................................................................3
Hypervisor-Based Server Virtualization Technology..................................................................................3
Description..............................................................................................................................................3
Purpose of the application.......................................................................................................................3
Working model........................................................................................................................................4
Scalability issues.....................................................................................................................................4
Features and weakness.............................................................................................................................4
Social technical aspects...........................................................................................................................5
Data centers.................................................................................................................................................6
Purpose of application.............................................................................................................................6
Working model........................................................................................................................................7
Scalability issues.....................................................................................................................................9
Features and Weakness..........................................................................................................................10
Social technical Aspects........................................................................................................................10
Container-based virtualization...................................................................................................................11
Purpose of the application.....................................................................................................................11
Working model......................................................................................................................................11
Scalability issues...................................................................................................................................12
Features and Weakness of the application.............................................................................................12
Social technical aspects.........................................................................................................................12
Conclusion.................................................................................................................................................12
References.................................................................................................................................................13

Introduction
Hypervisor virtualization technology is described as computer applications that create a virtual
machine and runs it. It is a technology that is commonly used and it has enabled more than one
operating system to run on one physical platform. On the other hand, data centers can be
described as a facility within an organization that is central, located to carry out IT activities
within an organization. These activities may include storage, retrieval and processing of data.
Data centers are important to an organization since they promote communication through
enhancing data exchange. These technologies have increased communication and business
operations in many enterprises. This report describes their characteristics, scalability and their
weakness in general.
Hypervisor-Based Server Virtualization Technology
Description
This is a technology that explains how computers create virtual machines and run them.
Operating system designers face serious problems while isolating software and allowing sharing
of applications between them [1]. This shows that each application has different layouts but
share some objects. Hypervisor strives to provide full separation between virtual machines by
providing support in sharing of resources in computers. The technology has made single
machines to host multiple software that are unrelated which run independent of the organization.
The applications do not need to actually share data, they run on the same kernel as a single
operating system. Currently, one can have different types of operating system installed in his
machine and use them without facing any problems.
Purpose of the application
There are many ideas that enhance the use of hypervisor virtualization technology. They include
[2].
 The technology is used in securing work environment in laptops.
 It enhances efficient use of hardware components by reducing usage of hardware
systems. This lowers maintenance costs and power usage in any organization.
 Detection of malicious attacks in the real time.

 It increases availability especially on the server side by providing features that are not
found on the server.
 Used in disaster recovery like data back up in case there is any loss.
 Debugging failing systems.
 The technology is also used by programmers in development of software and testing
them.
 IT centers use the technology in merging servers onto effective hardware.
 Virtual technology is used in selling private servers to companies.
 It creates space in server rooms or data centers.
Working model
If the server needs to execute a hypervisor, it loads the technology into a client operating system
of the VM. Then the technology provides correct CPU resource to memory bandwidth for the
machine. A VM can create requests to the hypervisor using many ways including API calls.
There two kinds of this technology:
i. Embedded or hosted hypervisors - They run as software using operating systems such as
windows
ii. Bare metal or native hypervisors - this occurs when hypervisors run on hosts hardware
components to manage the VM.
Comparison between embedded and native hypervisors
 Native run directly on the server while embedded run on operating systems
Scalability issues
It was difficulty to replicate hypervisors before. Currently they are highly scalable and flexible.
This means that they can be changed and moved if it is required. For this to occur, one needs to
know about methods that are used in data replication. Volume in machines must be replicated to
enable the technology to run more efficiently.
Features and weakness
The technology has following features and weakness [3].
Features
 It can be easily installed
 Easy to use