Web Hosting - Web Hosting Curriculum [1/10]

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Transcript of Web Hosting - Web Hosting Curriculum [1/10]

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WEB HOSTINGModule 1: Web Hosting

INTRODUCTIONWhen you order a hosting account you get access to a special type of computer called a server.This server lets you upload files to display on your site and lets other people access your site via your domain name.

Hosting accounts come in different sizes, which determines how many files and media you can have on your site and how many people can visit the site each month. These measurements are called disk space and bandwidth.

In this module, we will cover all of the topics mentioned above in detail.

MODULE OBJECTVIESUpon completion of this module, you should be able to:

Define a ServerDescribe the characteristics of a server in terms of Disk Space, Bandwidth and RAMDifferentiate different types of servers including:SharedVPSDedicatedCloudApply your knowledge to compare and contrast hosting plans.

WHAT IS A SERVER?

A server is a computer program that provides services to other computer programs (and their users).

The computer that a server program runs in is also frequently referred to as a server. That machine may be a dedicated (only used as a server) or used for other purposes as well.

WEB SERVERSWeb servers are computers that are usually set up in facilities called Data Centers, they are operated by hosting companies.

These computers store websites, and anybody with the corresponding address can access them online. Every Web server has an IP address and possibly a domain name. We will learn more about this further in the lesson.

Any computer can be turned into a Web server by installing server software and connecting it to the Internet. There are many Web server software applications, including public domain software and commercial packages.

Lets see..PAYING ATTENTION?Select one of the options. Then move on to the next slide to check your answer. Which of the following statements are true about servers?

Only some computers can be turned into web servers, it depends on their hardware characteristics.

Web servers are computers that are usually set up in facilities called Data Centers

A server is a computer that provides services to other computers.

Which of the following statements are true about servers?

Only some computers can be turned into web servers, it depends on their hardware characteristics.

Web servers are computers that are usually set up in facilities called Data Centers

A server is a computer that provides services to other computers.

Lets see..PAYING ATTENTION?Select one of the options. Then move on to the next slide to check your answer. Any computer can be turned into a Web server by installing server software and connecting it to the Internet.

DEFINTIONSBANDWIDTHRAM

The storage space or disk space, refers to the amount of space on a server that is allocated to website owners by the web hosting companies.

Having an idea of the disk space that you need to host a website or any other service will help you choose the right web hosting plan configuration.

The space you need to launch a site is not used only for accommodating files visible to the visitor's eye. It also refers to storing files and programs that lie in the background, but are responsible for supporting its interactivity, dynamic content, statistics and e-mail communication.

DISK SPACEWeb space is generally measured in bytes: Kilobytes (1,000 bytes), Megabytes (1,000 kilobytes) and Gigabytes (1,000 megabytes).

DEFINTIONSDISK SPACERAMThe bandwidth of a website is the actual amount of data transferred through the website at one time.

If you have less bandwidth, this may slow down the speed of your website. There is a particular amount of data which has to be transferred through the website that has to be calculated wisely; otherwise you may end up making your website unavailable for the visitors.

If youre launching a new site, calculating your bandwidth is something of a shot in the dark. The best approach is to keep careful track of your sites activity for the first few months after it goes live so you can determine your monthly usage, and adjust your account accordingly.BANDWIDTHCalculating your estimated bandwidth is easy:Estimate the average page size of your site, in kilobytes (KB). Multiply this value by the monthly average number of visitors.Multiply the result by the average number of pageviews per visitor.

DEFINTIONSDISK SPACEBANDWIDTHRAM (random access memory) is the place in a computing device where the operating system (OS), application programs and data in current use are kept so they can be quickly reached by the device's processor. RAM is much faster to read from and write to than other kinds of storage in a computer. Data remains in RAM as long as the computer is running. When the computer is turned off, RAM loses its data. When the computer is turned on again, the OS and other files are once again loaded into RAM.

More RAM memory generally means your server is better in handling demanding applications. A small part of the available memory is used by the operating system and its applications. The biggest chunk of memory however is reserved for all the applications and its users. RAMYou can compare RAM to a person's short-term memory and ahard diskto long-term memory. Short-term memory focuses on the work at hand, but can only keep so many facts in view at one time.

Lets see..PAYING ATTENTION?Select one of the options. Then move on to the next slide to check your answer. True or False:Disk Space is the place in a computing device where the operating system (OS), application programs and data in current use are kept so they can be quickly reached by the device's processor.

TrueFalse

Lets see..PAYING ATTENTION?Select one of the options. Then move on to the next slide to check your answer. True or False:Disk Space is the place in a computing device where the operating system (OS), application programs and data in current use are kept so they can be quickly reached by the device's processor.

TrueFalseFalse! RAM is the place where data in current use is kept for quick access.

HOSTING OPTIONSCLOUDVIRTUALSHAREDDEDICATEDThere four main hosting options: Shared, Dedicated, VPS and Cloud hosting.

Each of them have their advantages and disadvantages. Not only does it depend on what you need the hosting for, it also depends on your budget.

As you can imagine, shared hosting is quite a bit cheaper than dedicated hosting, so its up to you!

Lets analyze each of them in detail.

HOSTING OPTIONSCLOUDVIRTUALSHAREDDEDICATEDThis is the most popular hosting plan. Shared hosting means you will share resources like CPU, time, memory and space with other websites on the same server.ADVANTAGESDISADVANTAGESAffordable Easy to use and set up No control over performanceUseful for small websites

HOSTING OPTIONSCLOUDVIRTUALSHAREDDEDICATEDWith a normal hosting, a machine gives you the resources. With cloud hosting, there's NO machine. You hardware is virtual. It is very advanced and can be cost efficient.ADVANTAGESDISADVANTAGESScalable and efficient. Pay only for what you use. Requires advanced IT knowledge. Potentially insecure.

HOSTING OPTIONSCLOUDVIRTUALSHAREDDEDICATEDSimilar to shared hosting, but you are responsible for performance and maintenance. It is not very popular and prices may vary. ADVANTAGESDISADVANTAGESMore powerful than shared hosting. Other websites will not affect your own. Private space is more expensive.Required more IT knowledge.

HOSTING OPTIONSCLOUDVIRTUALSHAREDDEDICATEDDedicated hosting is basically owning your own server. All resources belong to you, you don't share time and memory. You have the only account access. ADVANTAGESDISADVANTAGESFull control. Best performance and availability.More expensive. Extensive IT knowledge is required.

Lets see..PAYING ATTENTION?Select one of the options. Then move on to the next slide to check your answer. Which hosting would you recommend a company that wants to pay only for what they use?

Virtual

Cloud

Shared

Dedicated

Lets see..PAYING ATTENTION?Select one of the options. Then move on to the next slide to check your answer. Cloud hosting allows you to pay only for what you use. Which hosting would you recommend a company that wants to pay only for what they use?

Virtual

Cloud

Shared

Dedicated

PRACTICE TASKTake some time to research and complete this task.

1. Make a list of 10 different hosting companies of your choice (you may want to include Web Hosting for Students for comparison).2. Look at the different types of hosting they offer (Shared, VPS, Dedicated, Cloud). Compare the plans for each type of hosting3. How would you rate the different providers?

CASE STUDYRecommend the web hosting provider you would choose for each of the case scenarios on the right.

Justify your answer.A media site that gets millions of hits per day.A large business site.A small personal site,Recommended hosting:

Recommended hosting:

Recommended hosting:

CONGRATULATIONS!You should now be able to:

Define a ServerDescribe the characteristics of a server in terms of Disk Space, Bandwidth and RAMDifferentiate different types of servers including:SharedVPSDedicatedCloudApply your knowledge to compare and contrast hosting plans.