Large supply SATA cable SATA transposon

SATA Serial ATA is the acronym for Serial ATA. This is a completely different parallel ATA hard drive interface type, the use of serial transmission of data named. SATA bus with embedded clock signal, with a stronger error correction capability than in the past the biggest difference is able to transmit instruction (not just data) to check if they will automatically correct errors, which in large extent, improve the reliability of data transmission. The serial interface also has a simple structure, the advantages of hot-swappable. Compared with the Parallel ATA, SATA has a comparative advantage. First, Serial ATA continuous serial transmission of data, it can increase the data transfer bandwidth using a higher operating frequency at less wide. Serial ATA transfer a data only once, this can reduce the number of pins SATA interface, the connection cable number is reduced, efficiency will be higher. In fact, Serial ATA with only four pins can do all the work, it is used to connect cables to connect the ground wire to send and receive data at the same time such a structure can reduce system power consumption and reduce system complexity. Second, the higher starting point Serial ATA, the greater potential for development, Serial ATA 1.0 defined data transfer rate up to 150MB / sec, which is currently the most blocks than parallel ATA (ie ATA / 133) can achieve maximum 133MB / sec of Data transfer rate is still high, and has been released Serial ATA 2.0 data transfer rate will reach 300MB / sec, the final Serial ATA 3.0 will achieve maximum data transfer rate 600MB / sec of. Here it is necessary to Serial ATA data transfer rate for a clarification. On serial communication, the data transfer rate is the actual bit rate of the serial interface for data transmission, Serial ATA transfer rate of 1.0 is 1.5Gbps, Serial ATA 2.0 transfer rate is 3.0Gbps. Like other high-speed serial interfaces, Serial ATA interface is also adopted a mechanism to ensure that the encoded data stream characteristics, this coding mechanism originally contained in each 8-byte data (ie 1Byte = 8bit) encoded into 10 data (i.e., 1Byte = 10bit), this way, each byte serial data stream Serial ATA interface contains a 10-bit data, the transmission rate through Serial ATA encoded correspondingly Serial ATA actual transfer rate becomes ten one-half, so 1.5Gbps = 150MB / sec, and 3.0Gbps = 300MB / sec. SATA physical design can be said is the Fibre Channel (FC) as the blueprint, so the use of four-core wire; demand voltage is significantly reduced to 250mV (up to 500mV), compared with traditional parallel ATA interface 5V 200 times less! Thus, firms can give additional Serial ATA hard disk drives on advanced features such as hot-swap (Hot Swapping) and the like. More importantly, in connection form, in addition to the traditional point to point (Point-to-Point) form, SATA also supports the "star" connection, so you can give RAID facilitate advanced applications such as design; in practice the use, SATA host bus adapter (HBA, Host Bus Adapter) if switch networks, and can be implemented in the form of a separate communication channel for each hard disk that each SATA hard drives have an exclusive transmission channel, so It did not exist as parallel ATA master / slave control problems. Serial ATA specification not only based on the future, but also to retain backwards compatible with a variety of ways, there is no compatibility problems in use. In terms of hardware, Serial ATA standard allows the use of converter provides compatibility with Parallel ATA devices, the converter can parallel ATA signal from the motherboard into a serial signal Serial ATA hard disk can be used, there are already more such adapter / adapter market, which in a way to protect our original investment, reducing the cost of upgrading; On the software side, Serial ATA and Parallel ATA maintains software compatibility, which means that manufacturers do not have the slightest using Serial ATA and rewrite any drivers and operating system code. In addition, Serial ATA connection than the traditional parallel ATA (Paralle ATA) wiring is much simpler and easier retractable chassis airflow and cooling, a significant improvement. Moreover, SATA drives and always trapped inside the chassis of different parallel ATA, scalability is very strong, which can be external, external enclosure (JBOD) will not only provide better heat dissipation and swap function, but also can multiplex connection to prevent a single point of failure; the SATA and Fibre Channel design is exactly the same, so the transmission speed can be done to ensure that different channels, which is important on servers and network storage. Serial ATA can be described as a lot of advantages compared to Parallel ATA, Parallel ATA will become a cheap alternative. And the transition from parallel ATA to Serial ATA is a general trend, it should only matter of time. Related manufacturers are vigorously promoted SATA interface, such as Intel's ICH6 series compared ICH5 Southbridge Southbridge in series, supports SATA interface from the 2 to the 4, and parallel ATA interface from two down to the 1 a; nVidia's nForce4 series chipsets support SATA II namely Serial ATA 2.0, but Samsung has chosen Marvell 88i6525 SOC chip development a new generation of SATA II interface hard disk.