Server virtualisation refers to splitting up the physical server into many virtualised private servers by means of a software called hypervisors. Each virtualised server works independently of others having their own operating system and resources. VPS Hosting utilises this concept to provide users with virtual servers having allocated resources.
Types of Server Virtualisation
There are three approaches to server virtualisation, and is based on the level of virtualisation each provides:
Machine level virtualisation: Also known as full virtualisation, as it gives the utmost isolation. Each virtual environment runs its own operating system and as an autonomous server. It utilises the host-guest paradigm, where the guest is unaware of the host operating system. However, a hypervisor is used as the management layer between the guest and the host to direct instructions to the CPU.
Paravirtual machine: This model involves porting, which is a modification of the guest’s operating system by the hypervisor. It is better suited for scenarios which require multiple virtual machines. Popular examples of software which uses paravirtual machines include Xen and UML.
OS level virtualisation: In this model, the host and the guests use the same operating system. However, different versions of the same operating system can be installed. Examples of OS layer virtualisation are Virtuozzo and Solaris Zones.
Advantages of server virtualisation:
Reduced expenditure: Server virtualisation not only help in saving on capital expenditure but also reduces operational expenditure. Since the hardware size is reduced, there is lower energy consumption which adds in lower overall cost. This
Cloud computing is extremely powerful. Many companies
dedicate a large portion of hardware processing power and data centre storage
for this type of application – however, for many developers it is not easily
accessible or usable as a viable means of centralised storage or application
sharing. This is why there needs to be a standardised platform available for
developers to easily access their cloud’s that may be spread over multiple data
centres or clouds. The University of California (Berkeley) is tackling this
problem with a great deal of interest. They are attempting to modify existing
database programming languages and integrating the modifications into a single
client platform that is able to access a variety of clouds.
Database languages aren’t really a difficult application
domain – however, the diversity of languages out there make it difficult for a
novice developer to really get into the specifics of a number of different
languages and many novice or smaller developers stick to a single database
platform because it is not feasible for them to employ database consultants
that specialise in any single database language. If you consider the range of
clouds out there that are relevant to social networks, communications
providers, search providers and any other data storage relevant niche then you
can easily see the range of specific technologies required to access clouds
from such a variety of sources.
You also have to keep in mind that cloud data is not
exactly static. It is dynamic because it changes constantly. Having a … Read More
If you have an old iPhone whose
contract has expired or because you bought a newer version, you can continue to
use it as an iPod touch. The support article on Apple includes instructions for
converting your iPhone that can be used as an iPod touch with Wi-fi support.
After you use a newer model for your iPhone or cancel your wireless service
tariff / account for your iPhone, it is still possible for you to continue
using your old iPhone without active cellular service. You can do this by using
it with your Wi-Fi.
For older iPhone versions like 1G
/ 2G, all you need to have is an original SIM card for technical support. This
is important without which there will be no point. However, iPhone 3G and
iPhone 3GS can use any SIM card to activate the phone that will be used for
your iPod Touch. So, don’t throw away or sell the old iPhone. Conversely, why
not make a pleasant surprise gift for someone who has been waiting to get an
Maybe you now have a new 32GB
iPod touch. You have played with its trendy features, installed applications,
and listened to your favorite music. There are so many interesting things that
you will enjoy finding it for the first time on your new 32GB iPod touch. You
can expect lots of tips and tricks in your favorite online technical support
For example, you look for
applications that allow you to take screenshots … Read More
Long Term Evolution – A New Wireless 4G Technology
The Toshiba 3D TV was recently released! They’re calling it a good TV as it could convert 2D television signals right into a 3D program. This series is the ZX900 cell TV. These can be obtainable in the US following 2010 which enable it to be found in 2 various sizes; 55 inches and 65 inches. Currently there’s no price information available.
– SECOND – Prepare – There is something to become said concerning the rule of 7
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Resisting Technology? Ways to Motivate Yourself to Keep Up With the Latest Technology
Following closely behind cNet is ZDnet. They have been around almost as long and still have made a … Read More
It is important to adopt, utilise and make complete use of the latest technology for everyone to check the pace with this changing world. If you are a teacher then you should know the present classroom technology making technique Interactive Smart or White board (IWB). If you are not yet introduced with all the IWB then it’s the correct time to match the present speed of technology.
– Technology blogs have become a fad over the web as a result of advantages these provide to both bloggers and readers
– It is a fact that technology has never ceased to develop
– Many things have stagnated because of failing economies
– Basic and big financial companies happen to be threatened with closures
– However, technology, particularly in electronics is constantly boom
– In fact, there seems to certainly be a new gadget superior to a model that has been just released the prior month
– That is how rapid technological advancement is
– That is also how in demand technology blogs are
– People need to know in regards to the latest models
– They want explanations about how precisely these work
– They want to have information prior to buying these latest releases
– They do this by going to the world wide web and study technology blogs
The Main Advantages of a Technology Blog
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