Origin of SCSIs(mall) c(omputer) s(ystem) i(nterface)
- (computing) Small Computer Systems Interface
scsi - Computer Definition
Pronounced scuzzy. A high speed parallel interface defined by the X3T9.2 committee of the American National Standards Institute (ANSI) for connecting minicomputers to peripherals, to other computers, and to local area networks (LANs). The several SCSI versions have bus widths of 8 or 16 bits and support data transfer rates of 5
(Small Computer System Interface) Pronounced "scuzzy," SCSI is a hardware interface for up to 15 peripherals connected to one PCI or PCI Express card ("SCSI host adapter") on the motherboard. Introduced in 1986 by Shugart Associates (see SASI), this original parallel architecture was largely replaced by a serial version (see serial attached SCSI). SCSI hard drives were used in mainframes, servers and storage arrays in the late-1980s and 1990s because they were very robust, and they were initially the only ones used in RAID configurations (see RAID). Eventually, less-costly IDE drives became highly reliable (see IDE and SATA). SCSI Is a Mini-LAN The SCSI bus is like a mini-LAN connecting 15 devices; actually 16 but the host counts as one. Any two can communicate at one time: host-to-peripheral and peripheral-to-peripheral. For more details, see SCSI Architecture Model, SCSI signaling, SCSI connectors and SCSI switch.