SCSI (Small Computer System Interface) is a set of standards for physically connecting and transferring data between computers and peripheral devices. SCSI is most commonly used for hard disks and tape drives, but it can also be used to connect other devices, including scanners and CD drives. An SCSI drive is usually referred to a disk drive that uses the SCSI standard interface and commands to connect and transfer data to/from the computer.
hard-disk
SCSI-2
DB25 SCSI connector50 pin SCSI connector
SCSI 3
SCSI, Fast SCSI, Ultra SCSI, Ultra2 SCSI: 8 devices Wide SCSI, Fast Wide SCSI, Ultra Wide SCSI, Wide Ultra2 SCSI, Ultra3 SCSI, Ultra160 and 160+ and Ultra320 : 16 devices Of course, the number of devices supported depends not only on protocol limitations, but cable length, number of cables used, etc.
Serial attached SCSI
scsi-3
SCSI Duck was created in 2003.
Ultra wide SCSI. wide SCSI buses support 16 devices, rather than the eight devices specified in regular SCSI.
SCSI, pronounced as scuzzy, stands for Small Computer System Interface. An SCSI port is used to attach peripheral devices that use the SCSI system , mainly for data transfer.
SCSI
SCSI 3