ANSI TR-28-2002 pdf download Information Technology一 SCSI Domain Validation (SDV)
3 Definitions, abbreviations, and keywords
3.1 Definitions
3.1.1 application client: An object that is the source of SCSI commands. Further definition of an application client is found in the SCSI Architecture Model-2 standard.
3.1.2 asynchronous transfer: An information transfer that uses the asynchronous REQ/ACK handshake with a REQ/ACK offset of zero.
3.1.3 byte: Indicates an 8-bit construct.
3.1.4 domain: The configuration of components within a service delivery subsystem that includes SCSI expanders, terminators, and cable plants that logically connect all attached SCSI initiators and SCSI targets.
3.1.5 double transition (DT): The latching of data on both the assertion edge and the negation edge of the REQ or ACK signals.
3.1.6 driver: The circuitry used to control the state of the SCSI bus segment.
3.1.7 driver-receiver connection: An assembly of driver, receiver, terminators, and the cable plant that produce the electrical coupling between the driver and receiver involved in the measurement.
3.1.8 expander: A device that connects SCSI bus segments together to form a single domain.
3.1.9 fast-5: Negotiated to receive synchronous data at a transfer period that translates into a transfer rate less than or equal to 5 megatransfers per second.
3.1.10 fast-10: Negotiated to receive synchronous data at a transfer period that translates into a transfer rate greater than 5 megatransfers per second and less than or equal to a transfer rate of 10 megatransfers per second.
3.1.11 fast-20: Negotiated to receive synchronous data at a transfer period that translates into a transfer rate greater than 10 megatransfers per second and less than or equal to a transfer rate of 20 megatransfers per second.
3.1.12 fast-40: Negotiated to receive synchronous data at a transfer period that translates into a transfer rate greater than 20 megatransfers per second and less than or equal to a transfer rate of 40 megatransfers per second.
3.1.13 fast-80: Negotiated to receive synchronous data at a transfer period that translates into a transfer rate greater than 40 megatransfers per second and less than or equal to a transfer rate of 80 megatransfers per second.
3.1.14 fast-160: Negotiated to receive synchronous data at a transfer period that translates into a transfer rate of 160 megatransfers per second.
3.1.15 initiator: Synonymous with SCSI initiator port (see 3.1.26).
3.1.16 logical unit: An externally addressable entity within a SCSI target device. See the SCSI Architecture Model-2 standard for a detailed definition of a logical unit. 3.1.17 logical unit number (LUN): An identifier for a logical unit.