“Let me once again explain the rules. Hadoop Rules!”
- Tera-Tom Coffing
Hadoop is all about lower costs and better value! Hadoop leverages inexpensive commodity hardware servers and inexpensive disk storage. In all previous systems the servers were in the same location, but Hadoop allows for the servers to be scattered around the world. The disks are called JBOD (Just a Bunch of Disks) because they are just unsophisticated disks attached to the commodity hardware. This approach enables incredible capabilities while keeping costs down.