1 HV Installation and Operations Guide

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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 port An opening at the back of the 4x50 providing connection between the SCSI

adapter and the SCSI bus.

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.

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