Various computer Hard drive capacities

Computer hard drive system (HDD) started with the Integrated Device Electronic technology (IDE) which had 20GB as its pioneering hard disk capacity. Later the 40GB capacity was developed, and then the 8OGB capacity and 150GB hard disk capacity were introduced. When the need arose for a higher hard disk capacity due to advancement in computer software technology, the Serial Advance Technology (SATA) hard disk system was innovated. SATA seems to be the preferred hard disk technology system for most computer manufacturing companies. SATA has various capacity ranging from 300GB, 320GB, 460GB, 500GB, 700GB and 1000GB which equivalent to 1TB (1 Terabyte). The Terabyte is the newest and highest capacity of hard drive system presently; and it is available up to 3TB (3 Terabyte) now.

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