HP Tape Library Interface Manager Software - Manual (Page 134)

134 Glossary
The narrow SCSI adapter is factory set to address 7. A narrow SCSI adapter
supports up to eight devices, including itself. SCSI address 7 has the highest
priority followed by 6, 5, 4, 3, 2, 1, and 0.
SCSI bus The means of transferring SCSI data between SCSI devices. It is an 8-bit or 16-
bit bus that supports up to eight or sixteen devices (including itself), in any mix
of initiators and targets, with the limitation that at least one initiator and one
target must be present.
SCSI device A single unit on the SCSI bus, identifiable by a unique SCSI address. A SCSI
device can act as an initiator or target. For SCSI-3, each SCSI device supports
up to sixteen LUNs.
SCSI status A menu name used to show the number of SCSI devices on the bus.
shortwave (SW) Lasers or LEDs that emit light with wavelengths around 780 nm or 850 nm.
When using multimode fibre (50 nm), shortwave lasers can be used with FC
links less than 500m. To achieve longer lengths, single-mode fibre is required.
The preferred fibre core size is 50 micron as this fibre has large bandwidth so
that the distance is limited by the fibre attenuation. A 62.5 micron core size is
also supported for compatibility with existing FDDI installations. Fibre of this
type has smaller bandwidth and, in this case, the distance is limited by the
fibre bandwidth.
single-ended (SE)
SCSI
A type of cable that is limited to short distances because of the way the
electronic signals move down the length of the cable.
SNMP Simple Network Management Protocol.
speed A status type in the FC Status menu showing the speed (1063 Mbps) of the FC
adapter.
storage bridge An intelligent device within the SAN (storage area network) infrastructure that
can handle multiple protocols, such as Fibre Channel and SCSI. The routing
decision is based on paths between address mappings among dispersed
initiators and targets.
SW Optical GBIC Short Wave Optical Gigabit Interface Converter
SW Optical FC
Cable
Short wave optical Fibre Channel cable