Today, my Mac Pro 2010 has been upgraded as the follows: It is now with a front dust filter and 4 wheels. So it can be moved around the apartment more easily and sucking less dust. It is as heavy as a tank, you know... It is now also with additional 3 x fans for the HDDs and PCIe compartment. Each of it has 10,000rpm which is 7.14 times extra-stronger than the original build-in fans (just 1,400rpm). The temperature of the hard drives has dropped sharply from 42'c to 34'c degree (hahhahaha, really cool. But a bit noisy. Not recommend if you place your Mac in your bed room). 1 x fan deployed under the HDD Bay-1 (front) to suck-in fresh air from the outside, like a RAM-Jet engine of the combat aircraft; and 2 more fans deployed under the HDD Bay 3 & 4. Which are used to cool down the both hard drives and the Areca RAID Controller. The whole compartment is now a Jet-stream tunnel. Note that I installed an additional black color dust-sink on top of each fan to protect the cable/wire; or my fingers not accidentally to be sucked it when the cover is open. They are 10,000rpm after all. The stand of the fan is self-make. The cost of materials of this DIY solution used: L angle metal stand (3 pairs) = USD$1.54 3.0' inch 10,000rpm fan x 3 = USD$19.26 3.0' black color dust filter x 3 = USD$3.47 The constant temperature of the hard drives during normal operation has dropped -8'c degree totally. Their life time should be prolonged now. I recommend this solution to those whose live in South Pacific, South Arica or South America during extra-hot summer.