SATA is the development of the ATA. SATA is defined as a technology designed to replace the ATA in total. Of serial ATA adapter to accommodate the data transfer at speeds higher than simple ATA.
The first-generation SATA interface known as SATA/150 or often referred to as SATA 1. 1 communicates with the speed of SATA 1.5 GB / s. Its uncoded transfer rate is 1.2 GB / s.
SATA/150 have nearly the same speed with PATA/133, but the latest
version of the SATA has many advantages (such as native command queuing)
which causes it to have more speed and the ability to perform work in
multitask environment ling.
In the early period of SATA/150, the adapter and drive makers to use
the bridge chip to convert the existing design with PATA interface. The device has a connector SATA bridge and has some power connectors. Gradually, the bridge to accommodate native SATA products. Current speed of SATA is 3GB / s, and experts are now designing technology for SATA 6Gb / s.
Hard drive is a secondary storage device where data is stored as magnetic pulses on a rotating metal disc that is integrated. function of a hard drive is for data storage. Components in the disk consists of several components sepsrti picture above. 
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