Private servers – are they worth it? Dedicated servers and their uses
Virtual private servers (commonly referred as VPS) is a virtual machine, this means that although it uses the same physical computer, it functionally separated from other virtual machines, it is dedicated to the users’ specific needs, and it can hold a different operating system and grants the user access to the root folder. One of the benefits of VPS is reducing the overall hardware and power expenses, while gaining most of the benefits of dedicated server, and full control over the server, it can also allow for users to run several (including older) versions of their operating systems on the same server.
Multiple VPS on a single machine is usually controlled by the hypervisor; it is dedicated to creation, control and management of individual VPS, by allocating hardware resources between them. VPSs can be virtualized, paravirtualized or the combination of the two mentioned. When the system is fully virtualized, users are allocated partial system resources, but they are not aware of it, it is presented to them as full physical components and whole interface is made to look as if they are using a dedicated host, and are not aware of hypervisor. In case of paravizualization, the user or the guest is aware of the hypervisor and sees the native hardware resources, thus enabling him to communicate with them directly, or real time, unlike the fully virtualized, where communication had to go through the hypervisor, thus granting faster and easier access. Most UNIX based operating systems support this kind of visualization, but it also requires a bit more experience and knowledge of the operating system used, because some options have to be set up manually.
Hybrid or combination paravizualization means that similar to full visualization but with pre build drivers for input/output communication thus increasing performance. It is most widely used in operating systems that are not modifiable for any reason. Dedicated servers as explained above mean that the client rents the entire server for himself, not shared with anyone. At first glance, it is similar to the VPS in terms of GUI and interface, but is different in the fact that the whole hardware is yours, and problems like power outages will not be shared. In dedicated servers, users are usually granted total and full control over every aspect of management, administration, all administrative access, and depending on the package even may not include technical support, but is left to the user.
This, in most cases, is a very good option for serious business and companies who require very reliable and high trafficking servers, with their own IT teams who manage them. This is usually a more expensive option, but for a business company that focuses on dealing over the internet, trying to save up on initial cost of web service, and ending up with a server that is unreliable or unresponsive, can later lead to a significant profit loss. The worst thing for you is when it takes a long time to respond to your site during rush hours, it is a sure way to turn away costumers or potential clients, and that is the last thing you want to do, that is a good way to ruin even the greatest business ideas. Therefore, in the end a dedicated server is usually a better option for internet companies who are looking to grow, and become a brand.