The disk interface is the connection of hard disk and host system.
This article will show you different types of disk interfaces.
The disk interface is the connection of hard disk and host system.
The function of disk interface is to transfer data between hard disk cache and host memory.
Different hard disk interfaces have different connection speed between hard disk and computer.
Hard disks withIDE interfaceare mainly used in household products, partially for server.
Hard disks with SCSI interface are primarily applied to servers.
Under the big category of IDE andSCSI, a variety of specific interface types still exist.
They have different technology specifications and different transmission rates.
CF
CF (Compact Flash) interface is mainly used in small mobile devices.
CF interface follows the ATA manufacture standard.
This action reduces the cable number as well as length of the hard disk interface.
And it is also more convenient for users to set up the hard disk.
IDE interface technology is being developed since the existence.
With the characters of cheap price and good compatibility, IDE interface has been irreplaceable.
IDE represents a throw in of hard disk.
For example, ATA, Ultra ATA, DMA and Ultra DMA interfaces all belong to IDE hard disk.
But the higher price makes it difficult to popularize as IDE hard disk.
So it is mainly used in medium and advanced servers and advanced workstations.
Fiber channel is developed to improve the speed and flexibility of hard disk storage system.
And it has largely improved the communication speed of multi-drive system.
SATA
SATA interface is a trend for future PC hard disk.
Serial interface also has the advantages of simple structure and hot swap ability.
Serial ATA is a novel kind of hard disk interface which is totally different fromparallel ATA.
It is famous for applying serial mode in data transmission.
Compared with ATA, SATA has many advantages.
Secondly, Serial ATA has higher starting point and greater potential for development.
SATA II Interface
SATA II is developed on the basis of SATA.
So, interface which merely reaches 3Gbps of external transmission rate is not really SATA II.
The core technologies of SATA II are 3Gbps of external transmission rate and NCQ technology.
On the contrary, NCQ technology can sort the sequence after receiving instruction.
In addition, not all of SATA hard disk can support NCQ technology.
NCQ technology doesnt supportFAT file system, and it supportsNTFSonly.
