Intro a software that manage the allocation of resources

    
    

 

    
    

 

 

 

Intro to Virtualization

Virtualization is a technique
that let you divide a one physical host into a multiple virtual server with the
help of virtualization software called Hypervisor. It is possible to run
different applications and operating systems in one computer increasing
flexibility of that single computer. This remove geographical limitations and
maximize profitability by reducing IT related expenses. As a result, companies are
now making virtualization as part of their infrastructure.

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Virtualization is not possible
without the Hypervisors. Hypervisors are a software that manage the allocation
of resources in real-time. Most known hypervisors are VMware ESX, Microsoft
Hyper-V, and Citrix XenServer. There are two types of hypervisors: Type 1 and
Type 2. Type 1 hypervisors run directly on the system hardware. These type of
hypervisors are known as bare metal or embedded. Type 2 hypervisors run on a
host operating system.

 

 

 

.

 

 

 

 

Comparison of Virtualization
Approaches

After learning what
virtualization is and its two types of hypervisors, we are now going to compare
the different approaches of virtualization. There are various kinds of
virtualization approaches that are widely applied, including:

·        
Server Virtualization

Server
virtualization is the dividing of a one computer into multiple smaller virtual
servers to maximize server resources.

 

·        
Desktop Virtualization

 

·        
Application Virtualization

·        
Storage Virtualization

·        
Service Virtualization

·        
Networking Virtualization

 

Benefits and weakness
of hypervisor-based systems

 

Benefits:

Reduced IT Costs

Virtualization reduce costs of
a business. It let companies minimize IT costs without sacrificing performance
by requiring fewer servers to achieve the same level of system availability,
performance, and scalability. Once servers are virtualized, it will greatly
reduce the management and administration processes because of the centralized
features of virtualization. Thus, resulting in lower operational expenses. Because
you running multiple servers or applications in one computer, you greatly
reduced power consumption.

 

Faster Provisioning

Virtualization can greatly
reduce provisioning time to few ours instead of days or weeks. This gives
greater flexibility and manageability.

 

Efficiency and High
Utilization

Mostly, physical servers are
only utilizing 20 to 30 percent of its capacity. With virtualization, you can
increase utilization to 80 percent. For example, instead of having 100 servers
running 30 percent of capacity, you can have 20 servers running 80 percent
utilization.

 

Weakness:

 

Upfront Investment is
Expensive

 

Performance

 

 

 

Threats and attacks in
virtualization

 

 

Analysis on Security
Solutions

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

References:

http://cdn.ttgtmedia.com/digitalguide/images/Misc/virt_approach_1.gif

https://www.infoq.com/articles/virtualization-intro

https://www.techopedia.com/definition/688/server-virtualization

http://searchcio.techtarget.com/tip/A-look-at-approaches-to-virtualization

https://www.businessnewsdaily.com/6014-pros-cons-virtualization.html

http://www.symantec.com/content/en/us/enterprise/media/security_response/whitepapers/threats_to_virtual_environments.pdf

http://www.datacenterknowledge.com/archives/2008/09/01/virtualization-to-increase-business-efficiency-and-decrease-costs

http://searchservervirtualization.techtarget.com/feature/Whats-the-difference-between-Type-1-and-Type-2-hypervisors

https://www.webopedia.com/TERM/S/server_virtualization.html

http://searchvirtualdesktop.techtarget.com/definition/desktop-virtualization

    
    

 

    
    

 

 

 

Intro to Virtualization

Virtualization is a technique
that let you divide a one physical host into a multiple virtual server with the
help of virtualization software called Hypervisor. It is possible to run
different applications and operating systems in one computer increasing
flexibility of that single computer. This remove geographical limitations and
maximize profitability by reducing IT related expenses. As a result, companies are
now making virtualization as part of their infrastructure.

Virtualization is not possible
without the Hypervisors. Hypervisors are a software that manage the allocation
of resources in real-time. Most known hypervisors are VMware ESX, Microsoft
Hyper-V, and Citrix XenServer. There are two types of hypervisors: Type 1 and
Type 2. Type 1 hypervisors run directly on the system hardware. These type of
hypervisors are known as bare metal or embedded. Type 2 hypervisors run on a
host operating system.

 

 

 

.

 

 

 

 

Comparison of Virtualization
Approaches

After learning what
virtualization is and its two types of hypervisors, we are now going to compare
the different approaches of virtualization. There are various kinds of
virtualization approaches that are widely applied, including:

·        
Server Virtualization

Server
virtualization is the dividing of a one computer into multiple smaller virtual
servers to maximize server resources.

 

·        
Desktop Virtualization

 

·        
Application Virtualization

·        
Storage Virtualization

·        
Service Virtualization

·        
Networking Virtualization

 

Benefits and weakness
of hypervisor-based systems

 

Benefits:

Reduced IT Costs

Virtualization reduce costs of
a business. It let companies minimize IT costs without sacrificing performance
by requiring fewer servers to achieve the same level of system availability,
performance, and scalability. Once servers are virtualized, it will greatly
reduce the management and administration processes because of the centralized
features of virtualization. Thus, resulting in lower operational expenses. Because
you running multiple servers or applications in one computer, you greatly
reduced power consumption.

 

Faster Provisioning

Virtualization can greatly
reduce provisioning time to few ours instead of days or weeks. This gives
greater flexibility and manageability.

 

Efficiency and High
Utilization

Mostly, physical servers are
only utilizing 20 to 30 percent of its capacity. With virtualization, you can
increase utilization to 80 percent. For example, instead of having 100 servers
running 30 percent of capacity, you can have 20 servers running 80 percent
utilization.

 

Weakness:

 

Upfront Investment is
Expensive

 

Performance

 

 

 

Threats and attacks in
virtualization

 

 

Analysis on Security
Solutions

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

References:

http://cdn.ttgtmedia.com/digitalguide/images/Misc/virt_approach_1.gif

https://www.infoq.com/articles/virtualization-intro

https://www.techopedia.com/definition/688/server-virtualization

http://searchcio.techtarget.com/tip/A-look-at-approaches-to-virtualization

https://www.businessnewsdaily.com/6014-pros-cons-virtualization.html

http://www.symantec.com/content/en/us/enterprise/media/security_response/whitepapers/threats_to_virtual_environments.pdf

http://www.datacenterknowledge.com/archives/2008/09/01/virtualization-to-increase-business-efficiency-and-decrease-costs

http://searchservervirtualization.techtarget.com/feature/Whats-the-difference-between-Type-1-and-Type-2-hypervisors

https://www.webopedia.com/TERM/S/server_virtualization.html

http://searchvirtualdesktop.techtarget.com/definition/desktop-virtualization