Critter takes hard drive temperature


Critter takes hard drive temperature

Researchers at the Carnegie Mellon University in the US are monitoring the temperature of hard drives used on the campus to work out whether they can extend their life beyond the average three years.

The university's Institute for Complex Engineered Systems (ICES) have designed a special monitor, known as the Critter temperature sensor, which measures hard drive temperature. It is being deployed on desktop computers in offices and labs on the campus.

"Essentially what we are trying to do is save the life of the computer hard drive. Hard drives get hot and the sensor is designed to pick up the slightest temperature variation," said project scientist Michael Bigrigg 

The average lifespan of a computer hard drive is 600,000 hours or just over three years.

The Carnegie Mellon researchers predicted that they may be able to extend the lifespan of a computer hard drive and save users time and money by sensing how much heat a hard drive endures daily. On average, it costs $80 to $200 to repair a damaged hard drive, according to ICES.

The problem comes with desktop hard drives being used in serial ATA form as storage arrays. While the best use cycle (balancing long life with use) for them is not known scientifically, it is thought that it is between daily working hours. In short, hard drives are not built for 24/7 use. 

Any increase in knowledge would be very useful for business users better manage the duty cycle and total cost of ownership of SATA drive arrays. However, it is likely that more sophisticated research will need to be undertaken, for example, into vibrational effects as SATA drives in an array are simultaneously active.

Chris Mellor writes for


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