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DuraStor 412R/6320SS/7320SS Installation and User's Guide
LVD (low voltage differential)
LVD is a method of powering SCSI cables that will be formalized in
the SCSI-3 specifications. LVD uses less power than the current
differential drive (HVD), is less expensive, and allows for higher
speeds such as those of Ultra2 SCSI. LVD requires 3.3 volts (versus
5 volts for HVD).
O
ownership
In an active-active configuration, each controller has ownership of
arrays and dedicated spares. If one controller fails, the other
controller assumes temporary ownership of its arrays and
dedicated spares.
P
PSU
Stands for Power Supply Unit.
S
SAF-TE (SCSI Accessed Fault-Tolerant Enclosure)
The SAF-TE specification is an open specification designed to
provide a comprehensive standardized method to monitor and
report status information on the condition of disk drives, power
supplies, cooling systems, and other components used in high-
availability LAN servers and subsystems . See also enclosure.
SAN (Storage Area Network)
A high-speed, special-purpose network that interconnects different
data storage devices with data servers, on behalf of a larger
network of users.
SCSI (Small Computer System Interface)
SCSI is an industry standard for connecting peripheral devices and
their controllers to an initiator. Storage devices are daisy-chained
together and connected to an HBA. The HBA provides a shared
bus that attached peripherals use to pass data to and from the host
system. Examples of devices attached to the HBA include disk
drives, CD-ROM drives, optical disk drives, and tape drives. In
Glossary-4
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