How many desktop hard drive interfaces are there?

The hard disk is a medium used by the computer to store data. The hard disk is divided into ordinary PC and server. With the popularity of high-speed solid-state drives, the hard disk interface is also different, so how many desktop hard disk interfaces are there? How to check the desktop hard disk interface type?

Nowadays, many computer users are popular to upgrade the hard disk to increase the speed of the computer. But not all computers are suitable for upgrading hard drives, because SSD solid-state drives require SATA3.0 interface motherboards, and some old computers, the motherboard hard disk interface is too old, so it is not suitable for upgrading. Knowing the type of desktop hard disk interface, you can check whether the computer is suitable for hard disk upgrade.

The hard disk interface is the connecting component between the hard disk and the host system, and its function is to transmit data between the hard disk cache and the host memory. Different hard disk interfaces determine the connection speed between the hard disk and the computer. In the whole system, the quality of the hard disk interface directly affects the running speed of the program and the performance of the system.

From an overall point of view, desktop hard disk interfaces are divided into five types: IDE, SATA, SCSI, Fiber Channel and SAS. IDE interface hard disks are mostly used in household products, and some are also used in servers, while SCSI interface hard disks are mainly used in the server market. , while Fiber Channel is only available on high-end servers and is expensive. SATA is a nascent desktop hard drive interface type.

IDE Interface HDD

IDE's full name in English is "Integrated Drive Electronics", that is, "electronic integrated drive", and its original meaning refers to a hard disk drive that integrates "hard disk controller" and "disk body". This type of desktop hard disk interface is relatively slow in transferring data and has been withdrawn from the market.

SCSI Interface HDD

The full English name of SCSI is "Small Computer System Interface" (Small Computer System Interface), which is a completely different interface from IDE (ATA). A high-speed data transmission technology widely used in minicomputers.

SATA Interface HDD 

The hard disk using the SATA (Serial ATA) port is also called the serial hard disk, which is the mainstream hard disk. Notebooks and desktops use this interface, and solid-state hard disks also use the interface.

SAS Interface HDD

SAS (Serial Attached SCSI) is Serial Attached SCSI. Like SATA hard drives, it uses serial technology to achieve higher transmission speed and improves internal space by shortening the connection cable. The interface technology of SAS is backward compatible with SATA. SAS interface hard drives are generally used on servers.

Fiber Channel Interface HDD

The English spelling of Fiber Channel is Fiber Channel. Like the SCSI interface, Fiber Channel was not originally an interface technology designed and developed for hard disks. It was specially designed for network systems. However, with the speed demand of storage systems, it was gradually applied to hard disk systems. middle.


There are two main types of desktop hard disk interfaces: IDE and SATA. At present, desktop hard disk interfaces all use SATA interfaces. SATA interfaces are divided into SATA2.0 and SATA3.0. The maximum transmission speed of SATA2.0 is 300M/s, while The maximum transfer rate of SATA3.0 is 600M/s. Nowadays, solid-state drives all use the SATA3.0 interface, and many ordinary mechanical hard drives have begun to fully use the SATA3.0 interface. As long as some of the capacity is small, the lower-priced mechanical hard drives still use the SATA2.0 interface.


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Post time: Aug-13-2022
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