A dedicated server is a single physical computer engineered to support multiple users, run a large number of different services and applications, and manage, store, send and process data 24-hours a day. A dedicated server allows for all the resources of the physical computer to be "dedicated" to one client and the hardware resources are not shared with any other clients. This is in contrast to shared servers and cloud servers where the resources of the physical computer system are shared amongst many clients.
Recently, we've added more formal uptime monitoring to our review process, and the results show that most Web hosts do an excellent job of keeping sites up and running. If they don't, they suffer for it in our scoring. Even if they get everything else right, sites with uptime problems aren't eligible for high scores. All services suffer ups and downs, sometimes for reasons beyond their control. Those sites that fail to address the problem are penalized accordingly.
All of these features may look impressive, but if you don't know what Dedicated Hosting is in the first place, these features probably don't matter much to you at all. When you purchase a Dedicated Server from A2 Hosting, you are getting all of the resources listed with the server plan of your choice. You do not share these resources with any other user or customer. The bandwidth, RAM and data transfer are for your use exclusively. With all of these resources at your disposal, you can expect your hosting service to be both highly reliable with top performance.