Small Computer Systems Interface

Small Computer Systems Interface.

• can connect up to 8 (or 16) devices on the cable.

• commands error checking, with parity (SCSI-1, SCSI-2), or CRC32 (SCSI-3).

• are common in servers and high-performance systems.

  • SCSI-over-Fibre Channel Protocol (FCP) – NAS systems.

  • Serial Attached SCSI (SAS) – serial cables (allows connection of SATA-2+ devices).

  • USB Attached SCSI (UAS) – external disks.

• more expensive than ATA disks.

• many kinds of connectors – generates some confusion.