2.5 inch external hard drive to usb enclosure

How good of a job do 2.5 inch hard drive enclosures with all aluminum casing dissipate heat keeping the temperatures low? I have a 1 tb 7200 rpm 2.5 inch hard drive from an non-working laptop I have to wipe and possible use as a storage backup. I will be using dban to wipe it clean, just a little concerned about heat. This is the one I'm considering... http://www.amazon.com/Sabrent-2-5-I...3118005&sr=8-7&keywords=sata+to+usb+enclosure

 

It will be fine.. I was looking at this particular enclosure when I was looking to reuse my 500GB HDD and it was quite highly recommended..

 

There is no need for DBAN. A full-format (writing zeros once to the entire drive) does the same job without any unnecessary wear and tear on the drive or wasted time by you. DBAN was based on a theoretical security issue that was published in 1993. In the years since, it has been widely accepted as being, for all practical purposes, impossible. In addition, current hard drives would be many orders of magnitude more difficult.

As far as heat is concerned, these 2.5" hard drives don't heat up too much. They usually get hot inside a laptop because of other things heating them up. Plastic or aluminum will both be ok. The biggest issue with an aluminum enclosure to dissipate heat is that the drive is surrounded by air while making very little metal on metal contact with the case.