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What is a dedicated server, or why Dedik? 
Dedicated Server - Dedicated server (eng). 
Dedik - Dedicated server (zharg.). 
Dedicated hosting, as opposed to virtual, where many sites of different customers are located on one server and are served by the provider, is a dedicated server located in a special place - data-center, where he ensured the supply of food, feed and place the rack. 

It goes without saying that a dedicated server gives the owner all the resources without any restrictions. Besides, the owner Dedik can install any software on it, including samopisnoe that none hoster will not install on a virtual (shared) hosting. 

Services servers are divided into two categories: unmanaged (maintenance) and managed (operated). Support unmanaged servers is limited to two actions - reboot the server on demand (ticker), and reinstall the operating system in case of damage by reason of illiteracy or the treatment of late-breaking Taking root and substitute critically important files. 

Support managed very vague and depends on the level of the personnel of hours of guaranteed network availability (SLA), guaranteed response time and complexity of the problem. 

Support (support) is divided into levels (levels). 

The tasks include support level 1 rebuty, answers to frequently asked questions, as well as the delay time of different stupid updates until ticker processing sapport with a higher level. Sometimes the state has no such specialist solution to the problem may take a long time. As a decent data-center support level 1 transmit ticker and he writes honestly, that was not able to cope with the problem and handed her a qualified professional. This is called an escalation ticker. Sometimes, the transition of escalation can take 24 hours. Ask for datacenters, which they had during the escalation. 

The tasks support level 2 is typical of decision problems - installation and setup of staffing software, updating the knowledge base to support level 1, a small trablshuting. For example, if the cgi script requires perl module Image:: Magick, support level 2 can do it to understand and to put it. However, it does not trablshuting, and in case of failures makes the escalation. 

Support level 3 addressing global challenges - trablshutingom. When the server is slow or are frequent peak load, some software does not wish to set or does not work after installation, if you suspect hardware problems - all of this falls within the competence of support level 3. 

Support level 4 in the state is very large and serious data-center, or works on an hourly contract basis with smaller companies. Its competence includes everything, including work with him on a stranger, restoring the system after the burglary, the search for an account, dealing with spam, the installation of the system limits, etc. 

The next important characteristic - it is the number given time. The typical practice of data-points in the event of any problems - this time using the provided low-level professionals, as well as the separation in time of each level is usually not provided. A typical situation for the inexperienced owner Dedik - nakrutka "multi-time updates from the support level 1. Therefore Ticket should be as descriptive as possible, to provide all, perhaps, superfluous information. Or vice versa - is simple, but with clear requirements, for example, firewall, open the 25110 and 80th ports. 
Usually rebooting the server - free, and the time they are not deducted. In some cases, even given access to special equipment, which is able to restart the server. But, nevertheless, did not find a combination of Free Reboots, ask for data-center - how long it takes to reboot and whether it would be taken into account. On average, rebut takes 5 - 15 minutes. 

It is possible that you will be offered other work - by the number of ticker. In this case, given any number of requests (20-100), which will be responsible for free, beyond the limit - would have to pay. It should also be borne in mind that it may be Ticket to support level 1, while the rest will have extra cost separately. 

SLA - level of network availability. It means that the ticker is sent will be read even in the day at midnight, and consequently processed within the specified time frame. It should be noted that despite assurances and beautiful inscription SLA 99%, in practice, can go completely wrong. 

Guaranteed response time data centers have reported with great reluctance, and it is quite natural. It is impossible for each of additional server to a specialist. However, if the contract is marked that the response to urgent ticket - rebut, for example - 24 hours worth prizadumatsya. This means that the server can idle the whole day at the slightest problem. 

But what exactly are the special offers Dedik? First, it is all the resources, and secondly, it is non-standard features. For example, to create a high-speed access to sites for phpnuke type of engines can be used 2 web server, not necessarily on the same Dedik. The first server - backend - provides normal Apache with php, mysql, etc. Second - frontend, which is a simple keshiruyushy Web server (http-accelerator), which is capable of withstanding a load of several hundreds of hits at the same time. 

What else you want to pay attention when choosing Dedik? 

At a total thickness of the channels, the existence of the reserve. The port is connected to the server, also plays an important role. Do not cut data-center ports or protocols, not whether to disable unnecessary network activity and what is its threshold? Ability dokupit additional IP on a different subnet is required only to NS domains in the zone of RU. The ability to continue to put more memory, extra hard drive. Also pay attention to the list of panels, their price, and another list of possible operating systems.

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