Chaparral K5312/K7313 - Manual (Page 148)

G- and K-Series User’s Guide
G-4
SCSI bus—A SCSI bus provides a means of transferring data between SCSI
devices. A SCSI bus is either an 8- or 16-bit bus that supports up to 8 or 16 devices,
including itself. The bus can consist of any mix of initiators and targets, with the
requirement that at least one initiator and one target must be present.
SCSI device—A SCSI device is a single unit on a SCSI bus that originates or
services SCSI commands. A SCSI device is identified by a unique SCSI address.
SCSI devices can act as initiators or targets.
SCSI port—A SCSI port is an opening at the back of a router that provides
connection between the SCSI adapter and SCSI bus.
Small computer system interface (SCSI) —SCSI is an industry standard for
connecting peripheral devices and their controllers to an initiator. Storage devices are
daisy-chained together and connected to a host adapter. The host adapter provides a
shared bus that attached peripherals use to pass data to and from the host system.
Examples of devices attached to the adapter include disk drives, CD-ROM discs,
optical disks, and tape drives. In theory, any SCSI device can be plugged into any
SCSI controller.
Simple Network Management Protocol (SNMP) —SNMP is the Internet
standard protocol, defined in STD 15, RFC 1157, developed to manage nodes on a
Internet Protocol (IP) network.
Speed—Speed is a status type in the FC Status Menu that shows the speed (1,063
Mbps) of the FC adapter.
Storage area network (SAN)—SAN refers to the network behind servers that
links one or more servers to one or more storage systems. Each storage system could
be RAID, tape backup, tape library, CD-ROM library, or JBOD. SANs operate with
both SCSI and networking (IP) protocols. Servers and workstations use the FC
network for shared access to the same storage device or system. Legacy SCSI systems
are interfaced using an FC-to-SCSI bridge.
Target—A target is a device (peripheral) that responds to an operation requested by
an initiator (host system). Although peripherals are generally targets, a peripheral
may be required to act temporarily as an initiator for some commands (for example,
SCSI COPY command).
Terminator block/termination—A terminator block (or termination) refers to the
electrical connection at each end of a SCSI bus. The terminator block is composed of
a set of resisters, or possibly other components. The function of a terminator block is
to provide a pull-up for open collector drivers on the bus, and also impedance
matching to prevent signal reflections at the ends of the cable. SCSI buses require that