Drive your own External Hard Drive with Purex Technology. A company called Purex Technology offers an external hard drive that is designed for maximum performance, reliability and durability. The company has designed the drive for those who want to be able to travel freely without worry about a disaster. Using the Ultrastorm 3.0 Technology on the drive, it makes multiple drives accessible at the same time so you can connect everything at once without having to turn on every one of them.