**** # * about ISCSI you know how much?
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Today'll tell you about
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As well as a variety of common interfaces
IDE: Integrated Device Electronics integrated device electronics (the IDE), a magnetic disk drive interface type, the controller circuit resides in the drive, no separate adapter card. IDE interface has many advantages, such as advanced cache to improve overall performance.
SCIS: Small Computer System Interface (Small Computer System Interface; abbreviated: SCSI), for a standard stand-alone processor (hard disk, floppy drives, printer, scanner, etc.) of the system level interface between the computer and the smart devices. Is an intelligent universal interface standard, which is provided in communication with a plurality of types of peripherals. SCSI uses ASPI (Advanced SCSI Programming Interface) standard interface allows software and drivers installed on the computer's internal SCSI adapter to communicate. SCSI interface is widely used in high speed data transmission technology in the minicomputer. SCSI interface with a wide range of applications, multitasking, wide bandwidth, CPU occupancy rate is low, hot plug and so on.
SATA: Serial ATA, Serial ATA. It is a computer bus, the main function is used in data transmission motherboard and mass storage devices (such as hard drives and CD-ROM) with between. This is a completely different from the hard drive interface PATA serial type, since the serial transmission of data is named. SATA bus using the embedded clock signal, with a stronger error correction capability, the biggest difference is that compared with the conventional transfer instructions can be examined (not just data), an error is detected if the automatic correction, which greatly improve the reliability of data transmission extent. Serial interface also has a simple structure, the advantages of hot-swappable.
In November 2000, developed by the "Serial ATA Working Group" group, SATA has completely replaced the old
PATA (Parallel ATA or formerly IDE) hard drive interface of the old, by serial transmission of data is named. In this regard the data transmission, SATA speeds faster than ever before, and hot-swappable, you can plug in or remove hardware when the computer was operating. On the other hand, SATA bus using the embedded clock signal frequency, with a stronger error correction capability than ever before, can transmit commands (not just data) to check if found will automatically correct errors, to improve the reliability of data transmission sex. However, SATA, and are most obvious in the past, is to spend a thin cable, is advantageously air inside the chassis to increase the stability of the entire platform to some extent.
At present, SATA respectively SATA 1.5Gbit / s, SATA 3Gbit / s and SATA 6Gbit / s three sizes. There'll be faster SATA Express specification.
PCIe: PCI-Express (peripheral component interconnect express) is a high speed serial computer expansion bus standard, its original name was "3GIO", was proposed by Intel in 2001, is intended to replace older PCI, PCI-X and AGP bus standards. Belonging to the high-speed serial PCIe dual-channel high-bandwidth transmission point, the connected device is assigned exclusive channel bandwidth is not shared bus bandwidth, to support the main active power management, error reporting, reliability of the transmission end to end quality of service and hot-swap ( QOS) and other functions. PCI-SIG PCIe handed over after (PCI Special Interest Organization) certification issued renamed "PCI-Express", referred to as "PCIe". Its main advantage is the high data transfer rates, but there is considerable potential for development. PCI Express also has a variety of specifications from the PCI Express x1 PCI Express x32, can meet the needs of low-speed devices and high-speed devices that appear within a certain time in the future. PCI-Express interface is a PCIe 3.0 latest interface that 8Gbps bit rate, about twice the bandwidth generation, and comprises a transmitter and a receiver equalizer, the PLL clock and data recovery to improve a number of important new features, to improve performance of data transmission and data protection. PCIe flash card suppliers include: INTEL, IBM, LSI, OCZ, Samsung (the plan), SanDisk, STEC, SuperTalent and Toshiba (the plan), etc., and for massive data growth enables users to larger, scalable stronger application of the system, adding PCIe 3.0 technology, the latest LSI MegaRAID controller and HBA products of excellent performance, you can achieve greater system design flexibility. As of January 2019, the current mainstream motherboards support pcie 3.0
