Applied-Marketing is an excellent resource to get all details about What Data Centers are, How they are categorize, What services do they offer and most important to know what factors should be considered while choosing a particular Data Center. Applied-Marketing has a well categorize list of all Data Centers around UK with their location details, facilities provided by them so that you can decide which is the best for your need.

Data Center : A Data center can be considered as secure physical structure that provides you facility for storing and managing servers, networks and computer equipments in highlysecured environment. Most data center includes redundant or backup power supplies,excellent data communications connections, environmental controls like air conditioning, fire alarms etc and special hi-fi security devices for making it a more secured place.

Types of Data Centers :
Data Centers can be categories into 2 types as Private (Enterprise Data Centers) and Public( Internet Data Center). Private Data center are those which are managed by organization’s own IT department for running their own applications, storing data, managing web-hosting servers for their own use. If Such organization provides all these services to public for certain amount then such data centers can be turned as an Public Data centers.

Due to popularity of Public Data Centers setting up an Public Data Centers can be considered as an good source of earning if you manage to give excellent service and support. Usually Public data centers provides different services for webmasters/businesses as equipment colocation to managed web hosting.

Data center classification :
Data centers can be classified by Tiers such as Tier , Tier 2, Tier 3 and Tier 4. The simplest is a Tier 1 data center and is most inexpensive where as Tier 4 is most robust, costly and are designed for to host mission critical, fully redundant subsystem with fault tolerant and excellent security zones.
Tier 1 or 2 is usually sufficient for enterprise data centers that primarily serve users within a corporation. Financial data centers are typically Tier 3 or 4 because they are critical to economic stability.

You can consider different Tier as :
Tier 1 Datacenter- A network that peers with every other network to reach the Internet.
Tier 2 Datacenter - A network that peers with some networks, but still purchases IP transit to reach at least some portion of the Internet.
Tier 3 Datacenter - A network that solely purchases transit from other networks to reach the Internet.

Datacenter Security :
Security is one of the most important factor which is to be considered while choosing any datacenter.
*You should look for number of cameras a a particular datacenter floor have and the place where they are installed. Also make sure about the data recording process and theit availability. How long this data is being stored.
* make sure all employees and concern authorities have to login their in and out time there should be some method to implement this.
* There should be few stop points on the way into datacenter.
* Make sure datacenter is operated 24x7x365 with skilled technical qualified staff with security personnel monitoring security issues round the clock.
* Crosscheck about the authority who have access to video logs and other security logs. Is there any procedure to get such records.
* You should choose a datacenter which is insured against loss due to theft, fire, flood or any natural calamity which may occure at any point of time.