Green Technology

Keeping data centers colder than needed is not just expensive - it is wasteful of energy and contributes to global warming - and just might cause equipment to not last as long as possible ...  

" ... Albert Esser, vice president of datacentre infrastructure at ... Dell, ... datacentres could cut their energy bills by up to five per cent with no adverse impact on their servers' reliability by simply increasing the temperature of their server farms by five degrees."

"According to Dell, air being pumped into a datacentre can typically be as cold as 19 degrees centigrade, despite the fact that systems will remain reliable as long as the temperature is lower than 25 degrees centigrade."

Esser pointed to a recent datacentre rollout that Dell contributed to, where the temperature was kept at 19 degrees, resulting in a Power Usage Effectiveness (PUE) ratio for the datacentre of 1.8. This means that for every watt used to power the servers, 1.8 entered the datacentres. However, when the temperature was raised to 23 degrees the energy efficiency of the facility improved significantly, resulting in a PUE of 1.3.

" ... Google has recently presented papers that shows that disk drives do not fail more often at temperatures of 75 to 100 degrees Fahrenheit, while BT is on record as saying "all modern systems will operate effectively and reliably between five and 40 degrees Celsius"."

One caveat ... "... if you have a cooling system failure and the datacentre is already pretty warm, you end up with a critical issue far more quickly, ... "

Via: computing.co.uk Link