SATA interface is responsible for data transmission between the motherboard and mass storage devices (such as hard disk and CD-ROM), which is mainly used for computers. Serial ATA and serial attached SCSI (SAS) are compatible in cable arrangement, and SAS interface can be connected to SATA hard disk.
SATA is faster than ever and supports hot plug, so you can plug in or unplug hardware when the computer is running. On the other hand, SATA bus adopts embedded clock frequency signal, which has stronger error correction ability. It can check the transmission instructions (not just data), correct the errors automatically when found, and improve the reliability of data transmission.
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SATA advantages:
The serial interface has simple structure, hot plug support, fast transmission speed and high execution efficiency. Hard disk using SATA (serial ATA) port is also called serial hard disk, which is the trend of PC hard disk in the future. Serial ATA adopts serial connection mode, and serial ATA bus adopts embedded clock signal.
The ability of error correction is stronger. Compared with the past, the biggest difference is that the transmission instructions (not just data) can be checked, and the errors will be corrected automatically when found, which greatly improves the reliability of data transmission.
Serial hard disk is a new hard disk interface completely different from parallel ATA, which is famous for transmitting data in serial mode. Compared with parallel ATA, it has many advantages.
First of all, serial ATA transmits data in a continuous serial mode, and only transmits 1 bit data at a time. This can reduce the number of pins of SATA interface, reduce the number of connecting cables and improve efficiency.
Serial ATA only needs four pins to complete all the work, which are used to connect power supply, ground wire, send data and receive data respectively. At the same time, this architecture can also reduce system energy consumption and system complexity.
Baidu encyclopedia -SATA