Glossary
UltraSCSI RAID Enclosure Glossary–13
SCSI device ID
The bit-significant representation of the SCSI addressing referring to one of
the signal lines numbered 0 through 7 for an 8-bit bus or 0 through 15 for a
16-bit bus. Also known as “target ID”.
SCSI domain
A SCSI domain is a logical bus consisting of at least one bus segment, at
least one initiator, and at least one target. Domains with multiple bus
segments are enabled through the use of bus extenders. Domains are limited
by device addressability. Domains are limited to a maximum of 16 initiators
and targets without the use of LUN bridges.
SCSI host-side device address
The eight device addresses (target IDs) assigned to the host device and the
SCSI controllers and the devices it controls.
See also SCSI device-side device address.
SCSI ID
See SCSI device ID.
SCSI port
(1) Software. The channel that controls communications to and from a
specific SCSI bus in the system. (2) Hardware. The name of the logical
socket at the back of the system unit to which a SCSI device is connected.
shelf power supply
The power supply that pr5 V dc and +12 V dc to the StorageWorks
shelves. These supplies can be either ac input (120 V ac) or dc (48 V dc).
single-ended SCSI bus
A bus in which the voltage of a single wire in relation to ground determines
each signal’s logic level.
single-power configuration
A power configuration in which there is only one ac power source and
CDU, PDU, or power controller to condition the input ac power.
Small Computer System Interface
See SCSI.
Summary of Contents for StorageWorks UltraSCSI DS-BA370 Series
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