OS MCA 106 Blog

Integrated Drive Electronics Drive

IDE/PATA Drives have usually 40 pins.
IDE/PATA Drives offer 133 MB/sec transfer rate.
It sends 8 bit data at a time.
PATA Cables are used to connect PATA HDD. Two drives can be connected in a single pata cable. One as master and other as slave. The configuration of master and slave is done by different combination of jumpers in the hdd.

SATA (Serial Advance Technology Attachment Drive)

SATA Drives have usually 7 pins, 4 pins in pair of two for sending and receiving data and rest 3 pins are grounded.
SATA Drives offers generally 300MB/sec transfer rate.
It sends data bit by bit.
SATA Cables are used to connect SATA HDD. Only one drive can be connected in a single sata cable.


Read more: http://bishwajeet.blogspot.com/2009/09/different-types-of-hard-disk-drive.html#ixzz1jvaIe8D6
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