Showing posts with label computing. Show all posts
Showing posts with label computing. Show all posts

Wednesday, November 9, 2016

About Cloud Computing What is Cloud Computing

About Cloud Computing What is Cloud Computing


What is Cloud Computing?

 

 

Cloud computing is a topic that many find confusing. It isn’t, though, as confusing as it sounds. In fact, most of those who claim not to understand the subject are part of the majority that use it daily.
 
In basic terms, cloud computing is the phrase used to describe different scenarios in which computing resource is delivered as a service over a network connection (usually, this is the internet). Cloud computing is therefore a type of computing that relies on sharing a pool of physical and/or virtual resources, rather than deploying local or personal hardware and software. It is somewhat synonymous with the term ‘utility computing’ as users are able to tap into a supply of computing resource rather than manage the equipment needed to generate it themselves; much in the same way as a consumer tapping into the national electricity supply, instead of running their own generator.
 
One of the key characteristics of cloud computing is the flexibility that it offers and one of the ways that flexibility is offered is through scalability. This refers to the ability of a system to adapt and scale to changes in workload. Cloud technology allows for the automatic provision and deprovision of resource as and when it is necessary, thus ensuring that the level of resource available is as closely matched to current demand as possible. This is a defining characteristic that differentiates it from other computing models where resource is delivered in blocks (e.g., individual servers, downloaded software applications), usually with fixed capacities and upfront costs. With cloud computing, the end user usually pays only for the resource they use and so avoids the inefficiencies and expense of any unused capacity. 
 
However, the advantages of cloud computing are not limited to flexibility. Enterprise can also benefit (in varying degrees) from the economies of scale created by setting up services en masse with the same computing environments, and the reliability of physically hosting services across multiple servers where individual system failures do not affect the continuity of the service.
 
There is also great choice in the level of security and management required in cloud deployments, with an option to suit almost any business:
 
A public cloud, for example, is a cloud in which services and infrastructure are hosted off-site by a cloud provider, shared across their client base and accessed by these clients via public networks such as the internet. Public clouds offer great economies of scale and redundancy but are more vulnerable than private cloud setups due their high levels of accessibility. More information can be found on our ‘What is a Public Cloud?’ page.
 
Private clouds on the other hand use pooled services and infrastructure stored and maintained on a private network – whether physical or virtual – accessible for only one client. The obvious benefits to this are greater levels of security and control.  Cost benefits must be sacrificed to some extent though, as the enterprise in question will have to purchase/rent and maintain all the necessary software and hardware. More information can be found on our ‘What is a Private Cloud?’ page.
 
The final cloud option is a hybrid cloud and this, as the name suggests, combines both public and private cloud elements. A hybrid cloud allows a company to maximise their efficiencies; by utilising the public cloud for non-sensitive operations while using a private setup for sensitive or mission critical operations, companies can ensure that their computing setup is ideal without paying any more than is necessary. More information can be found on our ‘What is a Hybrid Cloud?’ page.
 
Moving away from deployment models, broadly speaking there are 3 models of cloud computing which describe the service on offer; these are Software as a Service (SaaS), Platform as a Service (PaaS) and Infrastructure as a Service (IaaS). 
 
As with the other cloud computing categories, IaaS refers to the delivery of virtualised computing resource as a service across a network connection. IaaS specifically deals with hardware – or computing infrastructure - delivered as a service. Offerings include virtualised server space, storage space, network connections and IP addresses. The resource is pulled from a pool of servers distributed across data centres under the provider’s control, the user is then granted access to this resource in order to build their own IT platforms. IaaS can provide enterprises with great business benefits. More information on IaaS can be found on our ‘What is IaaS’ page.
 
PaaS is an extension of IaaS and describes a category of cloud computing that provides developers with environments in which to build applications, over the internet. In addition to the fundamental computing resource supplied by the hardware in an IaaS offering, PaaS models also include the software and configuration (often known as the solution stack) required to create the platform on which clients can create their applications. PaaS packages can be tailored to meet individual user needs; they can cherry pick the features of the service that are relevant to them while disregarding those that are not. PaaS provides a number of benefits to enterprises, including simplifying the development process for geographically split development teams. More information about Platform as a Service can be found on our ‘What is PaaS’ page.
 
SaaS is arguably the most common of the cloud computing variations; it’s the term used to describe a software delivery model in which applications are hosted (usually by a provider) and made available to customers over a network connection. Many people make use of SaaS without realising it as many web applications are delivered in this way; Gmail, Flickr, Twitter and Facebook are all popular examples of SaaS. Enterprise users also frequently make use of SaaS with many popular accounting, invoicing, sales, communications and CRM systems being delivered this way. More information about Software as a Service can be found on our ‘What is SaaS’ page.
 

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Friday, October 21, 2016

How to Effectively Work Cloud Computing

How to Effectively Work Cloud Computing


How to Effectively Work Cloud Computing

How to Effectively Work Cloud Computing

How to Effectively Work Cloud Computing - Cloud Computing systems or cloud-based computing works by using servers that work online and constantly on the Internet are connected.

At this server computer all data are stored including applications, installed on the server computer linked so that users can use any time when the Internet can be linked to a computer server.

For users who access the server storing the data or run a program, it takes the user must login and then the user can use cloud server resources to run a program without installing it on your own computer and also for storing data.

User runs an application provides several commands on the application, then the commands in the input by the user will be sent to the server across the Internet then processed / response by the server and then displays the results, the data from the results of this process are stored in the computer server, so every time the user wants to open and see the data that has been saved, the data will still be available on the cloud servers.

For example : 
The use of email users do not need to download and install the email application on his computer, just simply connect to the Internet, the user is able to use the email application on the cloud server.

Problem Of Cloud Computing

Data Security
Data security issues still be considered for the use of cloud systems, users of computers connected to the Internet network access server cloud, perhaps the intruders or call into the server computer cracker steal your data, then choose the server cloud that you value quite safe and have integrity the good one.

The Privacy
Privacy or data, of even the system used in implementing cloud server data encryption, but still allows the data stored in the cloud server readable by certain parties.

Prone intruders
Data security in the cloud computer can be a problem, such as the hacking of data, intruders like viruses / malware to the cloud server and be a problem if a security system that has been implemented by the server administrator has, it might happen.

Server Experiencing Off
The server experienced downtime caused by various measures such as high data capacity in the loading at the same time so that the server resources to be slow.
The server may be down due to unstable internet network server computer.

The Advantages of Using Cloud Computing

Efficient use of memory
The use of cloud computing infrastructure such as storage prepare various software no longer need to prepare a large capacity hard drive on his computer, the user simply by using the server.

The flexibility
Because the server is an Internet-based cloud service users to access at any time if it is connected to the internet cloud computing services make the user feel more flexible.

Fully scalable
Providing cloud services and offers data storage according to user request, the user easier management of data to be stored in the cloud server.

The disadvantage Using Cloud Computing

The user must be connected to the Internet
Require users to connect to the internet in order to access the server the user must provide internet network devices.

Cost for cloud server provider
Even smaller capacity than using multiple applications in the cloud computers with small capacity if instead you use the great resource of the server computer server cloud service providers pay your usage, it is reasonable.

Similarly, regarding cloud computing to take advantage of cloud computing technology using cloud-based applications to secure data that we consider important so that if there is damage such as damage to the stored data is still safe.

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