The Sata revolution has almost eliminated all other hard drive technologies(IDE and others) and has grown considerably with the release of terabyte drives that come in the same package footprint. With manufacturers going past the terabyte range like Western Digital that has released an external drive for the Mac at 6 terabytes(actually two 3-terabyte drives combined) the limit is actually again about the technology.
Hard drive technology has developed at breakneck speed in the couple of years but competition from the solid state memory market has been biting at their heels. Today, gadgets come with solid state memory that takes up the function of the hard drive but consuming less power and without the buzzing hum we are used to with hard drives.
