free web hosting service is a web hosting service that is free, usually advertisement-supported. Free web hosts will usually provide a subdomain (yoursite.example.com) or a directory (www.example.com/~yourname). In contrast, paid web hosts will usually provide a second-level domain along with the hosting (www.yourname.com). Many free hosts do allow use of separately-purchased domains. Rarely, a free host may also operate as a domain name registrar.
[edit] File hosting on free webhosts
Many free web hosting services discourage the use of their free web hosting services for file or image hosting only in which no web page is established or setup resulting in the use of bandwidth due to hot linking of files with no revenue gain to the service provider in the case of advertising supported services. As a result, hot linking or remote linking or inclusion of many image, media and download file formats is disabled or not permitted on many free web hosting services.
Other common limitations on file hosting limits on free hosts are limits on file size, for example no files over 5 MB or file types such as programs or large media files such as MP3.
This has resulted in the growth of free hosting services dedicated to image hosting, video hosting and general file hosting which permit remote hotlinking of files and larger file formats.
[edit] Co-branding and resellers
These let you brand fixed plans with your own company. Other services, offer WHM or panel reselling. This allows the client to develop his or her own web hosting plans and business.
Some customization commonly afforded to the co-branding or reseller owner would be the ability to set service quotas, to add, enable, disable or remove features of resold accounts, custom reseller or co-branded website, private label DNS and backend services among other items to differentiate the individual's service from the parent company of which they are a reseller or co-branded provider.
The key difference between co-branded and reseller services is the level of customization afforded to the individual setting up their own free hosting service and the level of autonomy afforded to the individual service owner.
A web hosting service is a type of Internet hosting service that allows individuals and organizations to make their own website accessible via the World Wide Web. Web hosts are companies that provide space on a server they own or lease for use by their clients as well as providing Internet connectivity, typically in a data center. Web hosts can also provide data center space and connectivity to the Internet for servers they do not own to be located in their data center, called colocation or Housing as it is commonly called in Latin America or France..
The scope of web hosting services varies greatly. The most basic is web page and small-scale file hosting, where files can be uploaded via File Transfer Protocol (FTP) or a Web interface. The files are usually delivered to the Web "as is" or with little processing. Many Internet service providers (ISPs) offer this service free to their subscribers. People can also obtain Web page hosting from other, alternative service providers. Personal web site hosting is typically free, advertisement-sponsored, or inexpensive. Business web site hosting often has a higher expense.
Single page hosting is generally sufficient only for personal web pages. A complex site calls for a more comprehensive package that provides database support and application development platforms (e.g. PHP, Java, Ruby on Rails, ColdFusion, and ASP.NET). These facilities allow the customers to write or install scripts for applications like forums and content management. For e-commerce, SSL is also highly recommended.
The host may also provide an interface or control panel for managing the Web server and installing scripts as well as other modules and service applications like e-mail. Some hosts specialize in certain software or services (e.g. e-commerce). They are commonly used by larger companies to outsource network infrastructure to a hosting company.
Web hosting service
This article does not cite any references or sources. Please help improve this article by adding citations to reliable sources.
An example of rack mounted servers
Types of Internet hosting service
Full-featured hosting
Virtual private server · Dedicated hosting · Colocation centre · Cloud hosting
Web hosting
Free hosting · Shared · Clustered · Reseller
Application-specific web hosting
Blog (comments) · Guild hosting · Image · Video · Wiki farms · Application · Social network
By content format
File · Image · Video · Music
Other types
Remote backup · Game server · DNS · E-mail
v · d · e
A web hosting service is a type of Internet hosting service that allows individuals and organizations to make their own website accessible via the World Wide Web. Web hosts are companies that provide space on a server they own or lease for use by their clients as well as providing Internet connectivity, typically in a data center. Web hosts can also provide data center space and connectivity to the Internet for servers they do not own to be located in their data center, called colocation or Housing as it is commonly called in Latin America or France..
The scope of web hosting services varies greatly. The most basic is web page and small-scale file hosting, where files can be uploaded via File Transfer Protocol (FTP) or a Web interface. The files are usually delivered to the Web "as is" or with little processing. Many Internet service providers (ISPs) offer this service free to their subscribers. People can also obtain Web page hosting from other, alternative service providers. Personal web site hosting is typically free, advertisement-sponsored, or inexpensive. Business web site hosting often has a higher expense.
Single page hosting is generally sufficient only for personal web pages. A complex site calls for a more comprehensive package that provides database support and application development platforms (e.g. PHP, Java, Ruby on Rails, ColdFusion, and ASP.NET). These facilities allow the customers to write or install scripts for applications like forums and content management. For e-commerce, SSL is also highly recommended.
The host may also provide an interface or control panel for managing the Web server and installing scripts as well as other modules and service applications like e-mail. Some hosts specialize in certain software or services (e.g. e-commerce). They are commonly used by larger companies to outsource network infrastructure to a hosting company.
Contents
[hide]
1 Reliability and uptime
2 Types of hosting
3 Obtaining hosting
4 See also
5 References
6 External links
[edit] Reliability and uptime
Multiple racks of servers
The availability of a website is measured by the percentage of a year in which the website is publically accessible and reachable via the internet. This is different than measuring the uptime of a system, as uptime refers to the system itself being online, however does not take into account being able to reach it – as in the event of a network outage.
The formula to determine a system’s availability is relatively easy: Total time = 365 days per year * 24 hours per day * 60 minutes per hour = 525,600 minutes per year. To calculate how many minutes of downtime your system may experience per year, you can take your uptime guarantee and multiply it by total time in a year.
In this example I'll use 99.99%: (1 - .9999) * 525,600 = allowable minutes down per year.
The following table shows the translation from a given availability percentage to the corresponding amount of time a system would be unavailable per year, month, or week.
* For monthly calculations, a 30-day month is used
A hosting provider’s SLAs may include a certain amount of scheduled downtime per year so that they can perform maintenance on the systems. This scheduled downtime is often excluded from the SLA timeframe, and needs to be subtracted from the Total Time when availability is calculated. Depending on the verbiage of an SLA, if the availability of a system drops below that in the signed SLA, a hosting provider often will provide a partial refund for time lost.
The percent uptime advertised by a web host is often a bad metric for determining a hosts quality. With this metric, a scheduled downtime from 2AM-3AM will be counted as just as bad as an unplanned downtime from 5PM-6PM.[1]
[edit] Types of hosting
A typical server "rack," commonly seen in colocation centres
Internet hosting services can run Web servers.
Many large companies who are not internet service providers also need a computer permanently connected to the web so they can send email, files, etc. to other sites. They may also use the computer as a website host so they can provide details of their goods and services to anyone interested. Additionally these people may decide to place online orders.
Free web hosting service: offered by different companies with limited services, sometimes supported by advertisements, and often limited when compared to paid hosting.
Shared web hosting service: one's website is placed on the same server as many other sites, ranging from a few to hundreds or thousands. Typically, all domains may share a common pool of server resources, such as RAM and the CPU. The features available with this type of service can be quite extensive. A shared website may be hosted with a reseller.
Reseller web hosting: allows clients to become web hosts themselves. Resellers could function, for individual domains, under any combination of these listed types of hosting, depending on who they are affiliated with as a reseller. Resellers' accounts may vary tremendously in size: they may have their own virtual dedicated server to a colocated server. Many resellers provide a nearly identical service to their provider's shared hosting plan and provide the technical support themselves.
Virtual Dedicated Server: also known as a Virtual Private Server (VPS), divides server resources into virtual servers, where resources can be allocated in a way that does not directly reflect the underlying hardware. VPS will often be allocated resources based on a one server to many VPSs relationship, however virtualisation may be done for a number of reasons, including the ability to move a VPS container between servers. The users may have root access to their own virtual space. Customers are sometimes responsible for patching and maintaining the server.
Dedicated hosting service: the user gets his or her own Web server and gains full control over it (user has root access for Linux/administrator access for Windows); however, the user typically does not own the server. Another type of Dedicated hosting is Self-Managed or Unmanaged. This is usually the least expensive for Dedicated plans. The user has full administrative access to the server, which means the client is responsible for the security and maintenance of his own dedicated server.
Managed hosting service: the user gets his or her own Web server but is not allowed full control over it (user is denied root access for Linux/administrator access for Windows); however, they are allowed to manage their data via FTP or other remote management tools. The user is disallowed full control so that the provider can guarantee quality of service by not allowing the user to modify the server or potentially create configuration problems. The user typically does not own the server. The server is leased to the client.
Colocation web hosting service: similar to the dedicated web hosting service, but the user owns the colo server; the hosting company provides physical space that the server takes up and takes care of the server. This is the most powerful and expensive type of web hosting service. In most cases, the colocation provider may provide little to no support directly for their client's machine, providing only the electrical, Internet access, and storage facilities for the server. In most cases for colo, the client would have his own administrator visit the data center on site to do any hardware upgrades or changes.
Cloud Hosting: is a new type of hosting platform that allows customers powerful, scalable and reliable hosting based on clustered load-balanced servers and utility billing. A cloud hosted website may be more reliable than alternatives since other computers in the cloud can compensate when a single piece of hardware goes down. Also, local power disruptions or even natural disasters are less problematic for cloud hosted sites, as cloud hosting is decentralized. Cloud hosting also allows providers (such as Amazon) to charge users only for resources consumed by the user, rather than a flat fee for the amount the user expects they will use, or a fixed cost upfront hardware investment. Alternatively, the lack of centralization may give users less control on where their data is located which could be a problem for users with data security or privacy concerns.
Clustered hosting: having multiple servers hosting the same content for better resource utilization. Clustered Servers are a perfect solution for high-availability dedicated hosting, or creating a scalable web hosting solution. A cluster may separate web serving from database hosting capability. (Usually Web hosts use Clustered Hosting for their Shared hosting plans, as there are multiple benefits to the mass managing of clients)
Grid hosting: this form of distributed hosting is when a server cluster acts like a grid and is composed of multiple nodes.
Home server: usually a single machine placed in a private residence can be used to host one or more web sites from a usually consumer-grade broadband connection. These can be purpose-built machines or more commonly old PCs. Some ISPs actively attempt to block home servers by disallowing incoming requests to TCP port 80 of the user's connection and by refusing to provide static IP addresses. A common way to attain a reliable DNS hostname is by creating an account with a dynamic DNS service. A dynamic DNS service will automatically change the IP address that a URL points to when the IP address changes.
Some specific types of hosting provided by web host service providers:
File hosting service: hosts files, not web pages
Image hosting service
Video hosting service
Blog hosting service
Pastebin
Shopping cart software
E-mail hosting service
[edit] Obtaining hosting
Web hosting is often provided as part of a general Internet access plan; there are many free and paid providers offering these types of web hosting.
A customer needs to evaluate the requirements of the application to choose what kind of hosting to use. Such considerations include database server software, scripting software, and operating system. Most hosting providers provide Linux-based web hosting which offers a wide range of different software. A typical configuration for a Linux server is the LAMP platform: Linux, Apache, MySQL, and PHP/Perl/Python. The web hosting client may want to have other services, such as email for their business domain, databases or multi-media services for streaming media. A customer may also choose Windows as the hosting platform. The customer still can choose from PHP, Perl, and Python but may also use ASP .Net or Classic ASP. Web hosting packages often include a Web Content Management System, so the end-user does not have to worry about the more technical aspects.
[edit] See also
Dedicated hosting service
Overselling
Green hosting
[edit] References
^ Smith, Chris. [SharedHostingRevealed.com "Error: no |title= specified when using {{Cite web}}"]. Shared Hosting Revealed. Retrieved 20 August 2011.
[edit] External links
Web hosting at the Open Directory Project
[hide]v · d · eWebsite management
Concepts
Overselling · Web document · Web content · Web content lifecycle · Web hosting service · Web server · Webmaster · Website governance
Web hosting control panels
Comparison of control panels · cPanel · DirectAdmin · Domain Technologie Control · Froxlor · GNUPanel · H-Sphere · InterWorx · ISPConfig · ispCP · Kloxo · Plesk · SysCP · Usermin · Webmin
Domain name managers and registrars
Afilias · AusRegistry · BigRock · CZ.NIC · CIRA · CNNIC · DENIC · DNS Belgium · Domainz · Dynadot · ENom · Go Daddy · Melbourne IT · Museum Domain Management Association · Name.com · Network Solutions · NeuStar · OLM.net · Register.com · Tucows · Web.com
Web content management system
Conference management system · Document management system · Wiki software · Blog software
