stands for small computer system interface. Pronounced "scuzzy,"
SCSI is a parallel interface standard used by Apple Macintosh computers,
PCs, and many UNIX systems for attaching peripheral devices to computers.
Typical SCSI Devices
SCSI chain – a series of SCSI devices working together through a host adapter
SCSI card or SCSI Host Adapter – comes as a PCI or ISA and has an internal and external connector that would connect to a device
scsi host adapter
devices are at the both ends of the SCSI chain must be terminated
are examples of internal SCSI interfaces:
Below are examples of external SCSI interfaces:
DB25 (found on SCSI 1 and common in Macintosh computers)
SCSI ID – Each device on the SCSI chain must have a unique ID with 0 being the highest priority and 15 being the lowest priority and the SCSI card is usually ID 7
LUN – logical unit numbers allows a device to share an ID up to seven sub units per ID
Types of SCSI
– is used primarily in RAID drives and if the client wants the
ability to daisy chain and have fast devices.