The SCSI (acronym for Small Computer System Interface) is an interface standard designed to achieve the transfer of data between various devices inside a computer (called devices) interconnected by a bus. SCSI should be delivered using the Anglo-Saxon spelling (eg the example is similar to the pronunciation of the name of the show CSI), but a widespread practice as wrong, as is often Italianate SCASI .
To connect a computer to a host bus connection requires a SCSI host adapter that handles the data transfer on the bus. The device must have a SCSI controller, which is usually embedded in all devices, except those of older design. The SCSI interface is mostly used for communication with units hard disk and tape drives, mass storage, but also for connecting a wide range of devices, such as image scanners, readers and writers of CD (CD- R and CD-RW), DVD players. In fact, the SCSI standard was designed to encourage intercambiabiltà and compatibility of the devices (all, at least in theory). There are also SCSI printers.
In the past, the SCSI interface was very common in all types of computers, while currently only is widely used in workstations, servers and peripherals range high (ie high performance). Desktop computers and poratili are usually equipped with ATA / IDE (Advanced Technology Attachment respectively and Integrated Drive Electronics) for the gl hard disk and the USB interface ( Universal Serial Bus) to other commonly used peripherals. These interfaces are slower than SCSI, but also cheaper. Note that the USB uses the same SCSI command set to implement some of its features.
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