Rack
- A group of inter connected nodes is called Rack.
- A rack can be collection of 30 to 40 nodes.
- Within rack nodes communication is very fast than different racks nodes communication.
- Within rack nodes means, communication between Rack1/Node1 and Rack1/Node2 is very fast.
- Different rack nodes means, communication between Rack1/Node1 and Rack2/Node1 is a bit slow.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj_ky-1ZMt6BrSuBF3bH_megWz0ihCOHuN4V8h1yO0AQVq_3P1aKntWC14rQT-1rPFkwR2LyB_JD6S0LdbmJ7-k9fXNwT7Q2iPtxXySlr2DwICECndnPaacs9ckQv_Xys-SBQVSQuld-Thz/s320/Rack2.png)
Thanks for your time.
-Nireekshan