Unlike a shared server, which powers multiple sites, a dedicated server hosts just one site. Website stability and reliability are the twin benefits of investing in a dedicated server—your site leverages a server's full CPU, RAM, and storage resources, as it doesn't share them with other sites. You shouldn't underestimate the importance of these benefits in terms of site speed and reliability.
Dedicated hosting services primarily differ from managed hosting services in that managed hosting services usually offer more support and other services. As such, managed hosting is targeted towards clients with less technical knowledge, whereas dedicated hosting services, or unmanaged hosting services, are suitable for web development and system administrator professionals.
Dedicated servers sound pretty great, right? They are. That said, you should be aware of their relatively high prices. Setting up shop on a dedicated server will likely cost you more than $100 per month; shared servers, on the other hand, are far less expensive. The cheapest web hosting services will lease you space on the web for well under $10 per month. In addition, you'll need to handle firewalls and maintenance yourself unless you opt for a managed server, which costs even more.
Every Dedicated Server comes preloaded with APF. APF is a well known and respected software firewall that utilizes the built in Linux routing system (iptables). The firewall will be configured to prevent access to all ports but ones necessary for servicing the site. Certain services, like SSH, are blocked by default to help prevent common attacks. During the setup process we can add your IP addresses to allow access to whichever services you deem fit.
If a company needs a dedicated server, but doesn’t have the time or resources to manage a server themselves, dedicated hosting is a low-cost way to access the resources of a full server. A dedicated hosting provider handles the cost of building and maintaining server equipment, reducing the overhead for a business purchasing server space, and improving their return on investment.
Availability, price and employee familiarity often determines which operating systems are offered on dedicated servers. Variations of Linux and Unix (open source operating systems) are often included at no charge to the customer. Commercial operating systems include Microsoft Windows Server, provided through a special program called Microsoft SPLA. Red Hat Enterprise is a commercial version of Linux offered to hosting providers on a monthly fee basis. The monthly fee provides OS updates through the Red Hat Network using an application called Yum. Other operating systems are available from the open source community at no charge. These include CentOS, Fedora Core, Debian, and many other Linux distributions or BSD systems FreeBSD, NetBSD, OpenBSD.