HP Surestore Tape Library Model 20/700 HP Surestore Bridge FC 2/1 LV and FC 4/ - Page 246

baud bridge bus channel clusters Device Differential differential SCSI domain exchange B A unit of signaling speed, expressed as the maximum number of times per second the signal can change the state of the transmission line or other medium (units of baud are sec-1). With Fibre Channel scheme, a signal event represents a single transmission bit. A device which selectively forwards data between networks based on administratively defined preferences. The forwarding decision is based on paths between address mappings among dispersed devices. Storage bridges focus on the SAN environment. See Storage Bridge. A means of transferring data between modules and adapters or between an adapter and SCSI devices. For a SCSI bus definition, see SCSI Bus. C A general term for a path on which electronic signals travel. Two or more computers sharing the same resources on a communication link. D See FC Device or SCSI Device. An electrical signal configuration using a pair of lines for data transfer. The advantage of differential compared to single-ended configuration is a relative high tolerance for common-mode noise and crosstalk when used with twisted pair cables. In layman's terms, this means longer distance. A type of SCSI cable that can go a maximum of 25 meters. A FC term describing the most significant byte in the N_Port Identifier for the FC device. It is not used in the FC-SCSI hardware path ID. It is required to be the same for all SCSI targets logically connected to a FC adapter. E A FC term for the basic mechanism used for managing an operation. An exchange identifies information transfers consisting of one or more related non concurrent sequences that may flow in the same or opposite directions, but always in half duplex mode. An exchange is identified by an OX_ID and an RX_ID. 248