A data center provides the compute power to run software. This software can be for various purposes/types like- hosting websites, Enterprise Resource Planning (ERP),Hospital Management System (HIS), etc. Now we all know that these types of servers handle a huge number of users, thus requiring a huge compute power to handle them. Here's where data center comes in picture. Components in a data center can be broadly classified into two types- IT infra and Physical infra.

IT INFRASTRUCTURE can be broadly classified into following components

  • Servers
  • Storage and Backup
  • Networking
  • Security
  • Software
  • Control Center


It is the most important components of a data center. Servers come in various form factors- tower, rack and blade. Of these, we have blades servers which are the prominent one's used in data centers. The servers are mounted on a rack (Rack is a frame used to keep mount servers.)Servers may be selected depending on various conditions such as the application they will run, space requirements etc. More on this is elaborated in the section Server Architecture & Implementation.


These are used to connect the components together in a network. The Network Components include Routers, Switches, etc. The networking components offer connectivity on various mediums such as-Fiber Optics, Ethernet etc. and provide large bandwidth for the smooth flow of data within and to/from the data center. Also, a data center will have its own dedicated connection to connect it to the internet


It includes various components like Firewall, IPS (Intrusion Prevention System), IDS (Intrusion Detection System) etc. The data stored in data center is very valuable and is heavily guarded from unwanted attack/access through the use of the above mentioned devices. All these are now individual appliances with dedicated OS and software running on them.


The software is the application running on the installed hardware infrastructure. The software may be ERP, HIS, Antivirus, WEB Hosting Server etc.


It is the place from where the entire data center is managed and monitored also known as Network Operating Centre(NOC). It is managed by experts 24x7 and has terminals which are used to remote login into the servers and the system. It also has LCD panels or Projector Screens to display vital information about the servers, facility management, and network devices.


The internal hard disks of the server generally contain the OS, the application running and some other small software. The actual data normally resides on external storage. The external storage may be classified into two types-Online and Offline. Online storage is directly accessible by the servers and contains the production data. Online storage may refer to DAS (Disk Attached Storage), NAS (Network Attached Storage),SAN (Storage Area Networks) etc. Offline storage refers to the storage used for backing up the data; that is used for recovery in case of failure in online storage. Offline storage may refer to Tape drives, Tape libraries etc. Physical Infrastructureincludes the following components


Biometrics is the science and technology of measuring and analyzing biological data. In information technology, biometrics refers to technologies that measure and analyzes human body characteristics, such as fingerprints, eye retinas patterns and hand measurements, for authentication purposes. Authentication by biometric verification is becoming increasingly common in corporate and public security systems, consumer electronics and point of sale (POS) applications. In addition to security, the driving force behind biometric verification has been convenience.