3.1. Glossary

External configuration - all SCSI peripheral devices are external to the host enclosure.

Host - A personal computer system that contains a host adapter and zero or more SCSI peripheral devices.

Host adapter - either an embedded or add-in SCSI device that acts as an initiator.

Internal configuration - all SCSI peripheral devices are internal to the host enclosure.

Legacy SCSI device - an SCSI device implemented prior to this specification that does not conform to PnP SCSI.

Mixed configuration - a combination of internal and external SCSI peripheral devices.

SCSI peripheral device - an SCSI device other than a host adapter that does not include an enclosure, power supply, or external connector.

Peripheral subsystem - an enclosure that contains one or more SCSI peripheral devices.

Internal terminator - the terminator that exists within the host that terminates the internal end of the SCSI bus.

External terminator - the terminator that exists on the last peripheral subsystem that terminates the external end of the SCSI bus.

Exit-point terminator - a terminator that may be enabled or disabled which exists at the 50-position high-density connector on hosts that support a mixed configuration.