Operating Manual U42093-J-Z716-1-74
Glossary
Clusters
Twoor more computers sharing the same resources on a communication
link.
Device
SeeFCDeviceorSCSIDevice.
Differential
An electrical signalconfiguration using a pair of lines for data transfer. The
advantageof differential compared to single-ended configuration is a relative
high tolerancefor common-mode noise and crosstalk when used with
twisted pair cables.
Domain
AFC 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 forall SCSI targets logically connected to a FC adapter.
Exchange
A FC term forthe basic mechanism used for managing an operation. An
exchangeidentifies information transfers consisting of one or more related
nonconcurrentsequences that may flow in the same or opposite directions,
butalways in half duplex mode. An exchange is identified by an OX_IDand
an RX_ID.
Fabric
AFC ter m describing a switchedtopology, which is one of the three existing
FC topologies.Fabric elements interconnect various N_Ports or NL_Ports
and are responsiblefor frame routing.
Fast/WideSCSI
”Fast”and ”Wide” are relative terms in comparing previous SCSI standards
and products. ”Fast,”as defined in SCSI-2, refers to a maximum
synchronoustransfer rate of 10 MHz. ”Wide” refers to a data path of 16 bits.
Fault LED
During powerup and self test, the PSFR-CP41 Fault LED comes on. After
selftest, if this LED remains on or comes on, the PSFR-CP41 has a problem
withone of its components. During normal operation, this LED should be off.
When the PSFR-CP41 is offline,this LED blinks.