FC,SAS,SATA硬盘的区别（国外英文资料）.doc

FC,SAS,SATA硬盘的区别（国外英文资料） ISMV100R003C01SPC007 01.02.01.214. T06 (2011-06) The difference between FC, SAS, SATA drives There are a lot of different types of hard drives, such as FC, SAS, SATA, etc. As data stores the most basic media -- hard disks, there are more and more kinds. What is the difference between these mainstream types of hard drives in the marketplace? This article compares the three hard drives of FC, SAS, and SATA. A, FC hard disk FC disk is the disk that USES the fc-al (Fiber Channel Arbitrated Loop) interface mode. FC - AL make fiber channel can connect directly as a hard disk interface, for high throughput performance intensive system designer has opened up a way to improve the level of I/O performance. At the moment, high-end storage devices use the hard drives of FC interfaces. The name of the FC hard disk is based on the optical physical channel, hence the name of the fiber optic hard drive and now supports the copper wire physical channel. Like IEEE 1394, Fibre Channel is actually defined as a SCSI -3 class, a sibling of the SCSI. As a serial interface, the fc-al peak can reach 2Gbits/s and even 4Gbits/s. And the maximum transmission distance from optical connection devices can reach 10KM. Through the FC - loop 127 devices can be connected, is why based on FC hard disk storage device can usually connect hundreds or even thousands of a hard disk provides large capacity storage space. Regarding fiber optic hard disk with its superior performance, stable transmission, plays an important role in the enterprise storage of high-end applications. Much of the industrys focus is on the bandwidth of the fibre optic interface. The first widely used fiber optic interface bandwidth was 1Gb, and the 2Gb band of fibre optic products dominated the market for up to three years. The current standard for bandwidth is 4Gb, which is currently used by a wide range of manufacturers. 8Gb of fibre-optic products will also replace the 4Gb fiber in the near future. 4 gb