Data centres have come a long way from simple old server rooms and have undergone many transformations. Data is critical to any business and keeping it safe, updated, and easily accessible is crucial. The data centre concept is a modern-day model, and the business is proving profitable for companies who provide redundant and offsite storage as a service. Strong IT infrastructure forms the basis of such storage facilities.
Data centres are made up of high speed, high demand networking communication systems with capability for handling the traffic for SAN (Storage Area Networks), NAS (Network Attached Storage), file/ application/web server farms, and other components in a controlled area. The environment control is about humidity, electricals, temperature, fire controls, and access. Communication with the data centre is provided by WAN, CAN/MAN and LAN links. The ideal data centre will offer round-the-clock accessibility, scalability, and reliability. Data centres are of 2 types:

Corporate and institutional data centres (CDCs) belong to a corporation.

Internet Data Centers (IDCs) are operated by Internet Service Providers (ISPs).