Internet and the world wide web are something that is taken for granted now a days.Have you ever wondered where all the websites and the computers that you connect to on the computer reside.Well someone can keep it in his home keep it powered up when he is awake..shut it down sometimes…..

This wouldnt give us the anywhere anytime web experiance and usually Home internet connections are usually very slow ,A 256KBps connection would be insufficient for a moderate website having 100 to 200 hits ina day.Remeber a hit is actually a request and the server sends out some data through the network pipe

The actual case is that real world website are all placed on specific locations called Data Centres or NEtwork Operations Centres ,which is built on raised flooring(should survive natural disasters like earthquake),have redundant power and high end cooling and manned by 24 hour hour experianced staff

And network connected to Tier 1 networks like ,AOL,Sprint etc..through 100 MBPS network pipes

The data centre is also higly secured and provides only restricted access to others

Mostly the computers at data centres where space is a constraint are called Rack servers simply because they are placed in computer racks.

Rack sizes range from 1U, 2 U etc.U simply stands for UNIT.

a 1 U server is the smallest and has high initial cost ..but carries less rent for colocation,2 U is comparitively cheaper initially ,but can cost much in terms of rent

–The author Anoop.Alias is a GNU/Linux enthusiasts and a Data Centre Support engineer.He maintains a collection of technical articles regarding linux administration at TechnoMenace

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