Digital Equipment StorageWorks UltraSCSI DS-BA370 Series, User Manual

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Glossary
UltraSCSI RAID Enclosure Glossary–9
initiator
A SCSI device (usually a host system) that requests another SCSI device (a
target) to complete an operation.
Input/Output module
See I/O module.
isolator
See bus extender.
Intake air temperature
The temperature of the air entering the cabinet, enclosure, shelf, or SBB.
Also referred to as the ambient temperature.
logical bus
A single-ended, physical bus connected to a differential physical bus by a
SCSI bus signal converter.
logical units
A group of devices addressable as a virtual unit.
maintenance terminal
The operator terminal used to identify an HS-family controller, to enable its
host paths, to define its subsystem configuration, and to check its status.
The HS-family maintenance terminal accepts any terminal conforming to
EIA–423. Use the maintenance terminal to configure a storage subsystem.
master enclosure
The UltraSCSI RAID enclosure that includes the HSZ-series controllers and
cache modules. There is only one master enclosure in each UltraSCSI RAID
subsystem. The SCSI bus address switch setting is always 0. Using address
0 automatically assigns SCSI bus device addresses 0, 1, 2, and 3 to the
devices.
MB/s
See MB/sec.