Digital Equipment StorageWorks UltraSCSI DS-BA370 Series, User Manual

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Glossary
UltraSCSI RAID Enclosure Glossary–5
data center cabinet
The largest of the StorageWorks cabinet, such as the SW800-series that can
contain as many as 24 SBB shelves. These cabinets include either a 50 Hz
or 60 Hz cable distribution unit (CDU), internal ac power cords, and cooling
fans.
departmental server cabinet
The series of smaller StorageWorks cabinets for mounting shelves,
controllers, storage device, and power control devices to form subsystems.
device
The targets, initiators, hubs, converters, and bus expanders, and similar
device interconnected to form a SCSI bus. Connectors, expanders, and hubs
do not use a SCSI bus ID.
See also nodes.
device connector
Any connector physically part of a SCSI device.
differential SCSI bus
A bus in which the potential difference between two wires determines the
signal level.
disk
A storage device supporting random access to fixed size blocks of data.
disk array controller
See controller.
dual power configuration
See redundant power supply configuration.
dual redundant configuration
An array controller configuration consisting of controller “A” and controller
“B” mounted in the same controller shelf. When controller “A” fails,
controller “B” assumes control over the devices.