About Cold and Hot Aisles in Floor Layout - Appliance for Hadoop

Appliance for Hadoop 5 Platform Product and Site Preparation Guide

Product
Appliance for Hadoop
Published
February 2018
Content Type
Product Guide
Publication ID
B035-6030-075K
Language
English (United States)
Last Update
2018-05-03

The system hardware employs front-to-rear air cooling technology. Cooling air enters the front of each cabinet through the openings in the doors, and heated air is exhausted from the rear of each cabinet.

Cold aisles are the aisle spaces between two rows of cabinets that face each other, front to front. A cabinet row with the front facing open space is also called a cold aisle.

Hot aisles are the aisle spaces between two rows of cabinets that are aligned rear to rear. A cabinet row with the rear facing open space is also considered a hot aisle.

The cold aisle must remain cold. Do not attempt to cool down hot aisles. They are intended to be hot, and are not an indication of environment problems. Cold aisles must remain cold, and hot aisles are supposed to remain hot.