You may be using the word SATA in your day-to-day to talk about end devices, and you know that there are different types (SATA2, SATA3 …) and different types of connectors (SATA, mSATA …) but, what is the name?
What does SATA mean, what is it and what is it used for?
SATA comes from the English word Serial Advanced Technology Attachment, too it's a bus encounter computers data transfer between motherboard and other devices which make up a PC, such as a hard drive or optical disc reader and writer. SATA replaces previous usage, PATA (Parallel-ATA), also known as IDE, provides better speed and agility
This interaction was common on PC boards as its development team, SATA-IO, launched its construction. Provides higher speed, better use when multiple units are simultaneously connected, data cable length and ability to connect devices instantly (heat exchange) without shutting down equipment to do so.
Speed
When it comes to data transmission speeds, measurement units are sometimes confusing because SATA 1.5 Gbps, 3 Gbps and 6 Gbps are used to target SATA, SATA2 and SATA3 levels, but the reality is the actual transmission speed is different. It should be noted, by the way, that units that support 3 Gbps speed are not compatible with the display at 1.5 Gbps, but those 6 are 3.
| SATA | SATA 2 | SATA 3 | |
|---|---|---|---|
| Usually | 1500 MHz | 3000 MHz | 6000 MHz |
| Bits / clock | 1 | 1 | 1 |
| 8b10b writing | 80% | 80% | 80% |
| bits / bytes | 8 | 8 | 8 |
| Real speed | 150 MB / s | 300 MB / s | 600 MB / s |
Topology
This level uses the "point to point" architecture, which means that the interface between the app and the port is straightforward; each device is connected to a controller, not as in the case of the old PATA, the connection of which is divided between «Master» and «Slave».
Connectors and ports
Connectors and cables are the main difference between SATA and ATA drives, since previously used was to connect the same connector to the machines or server (3.5-inch) and portable storage (2.5-inch), as well as SSDs, DVD Drives etc.
The standard defines a data cable for seven operators (3 ground and four data pairs in pairs of different types), using an 8 mm wide circular connector.
Data cables support up to one meter, and unlike PATA cables, each cable and connector can operate one unit.
But the power connectors, which also appears in the image above, using a different color code than MOLEX used by PATA. They are quite large as they have 15 pins instead of 4, and they have a notch so we can connect them only one way.
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