What does sata mean and what is sata

SATA is an abbreviation for Serial ATA, which was established by the group "Serial ATA Working Group" in November of the serial year. It is a computer bus whose main function is to transfer data between the motherboard and a large number of storage devices (such as hard disks and optical disk drives).

The SATA bus uses embedded clock frequency signals, which has more error correction capabilities than ever before, and can check transmitted instructions (not only data) and automatically correct errors if they are found, improving the reliability of data transmission. The most obvious difference between SATA and the previous one is that it uses thinner cables, which is conducive to air circulation inside the chassis and increases the stability of the entire platform.

SATA interface: a new type of computer hard disk interface.

SATA (Serial Advanced Technology Attachment) is a serial hardware driver interface jointly proposed by Seagate, Intel and other major manufacturers based on industry standards, which is responsible for data transmission between motherboards and mass storage devices (such as hard disks and optical disk drives), mainly used in personal computers. sata**。

In 2002, although the Serial ATA related equipment was not officially launched, the Serial ATA Committee had already preemptively established the Serial specification. The SATA specification will be hard disk's'The theoretical external transfer rate has been increased to 150MB s, which is 50% higher than the PATA standard ATA 100 and about 13% higher than the ATA 133, and the SATA interface can be extended to 2x and 4x (300MB s and 600MB s) with future developments. Judging from its development plan, in the future, SATA will also increase the interface transfer rate by increasing the clock frequency, so that the hard disk can also be overclocked.

The SATA interface looks like this:

Serial ATA (SATA, Serial Advanced Technology Attachment), also known as Serial Guess Line ATA, is the twin brother of Serial SCSI (SAS: Serial Attached SCSI), the two cables are compatible, and SATA hard disks can be connected to SAS interfaces. It is a computer bus whose main function is to transfer data between a motherboard and a large number of storage devices such as hard disks and optical drives.

The serial interface also has the advantage of being simple and hot-swappable.

RationaleIn the case of serial communication, the data transmission rate refers to the interlinear bit rate of the serial connection SATA interface, the transmission rate of the serial is, and the transmission rate of the serial is. Like other high-speed serial interfaces, the Serial ATA interface uses an encoding scheme to ensure the characteristics of the data stream, which encodes the 8 bits of data originally contained in each byte (i.e., 1 byte = 8 bits) into 10 bits of data (i.e., 1 byte = 10 bits).

In this way, the serial ATA interface contains 10 bits of data per byte of serial data stream, and the encoded Serial ATA transmission rate becomes 1/10 of the actual transmission rate of Serial ATA.

The difference is whether a PCI-E SSD can be connected or not.

The full name of ESATA is External Serial ATA (External Serial ATA), which is the external extension specification of SATA interface. In other words, the ESATA is an "external" version of SATA that is used to connect external rather than internal SATA devices.

1. SATAE is a part of the SATA standard, not a new instruction or protocol, but a specification that integrates SATA and PCI-E signals in an interface, so it is fully compatible with existing SATA equipment and data cables, and the only difference is that it can be connected to PCI-E SSD.

2. SATAE also supports PCI-E, but at this stage it needs to rely on the chipset (actually Nanqiao) to provide PCI-E channels, so before Intel upgrades the chipset to PCI-E, SATAE can only get PCI-E X2 at most, and the actual available bandwidth is about 780MB S, even if this is significantly higher than SATA 6Gbps 515MB S, and once there is PCI-E, the bandwidth can be doubled immediately.