HP A5150A PCI Dual Port Ultra2 SCSI Host Bus Adapter

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SCSI (small computer system
interface) A specification for a
high-performance peripheral bus
and command set. The original
standard is now referred to as
SCSI-1.
SCSI-2 The current SCSI
specification that adds features to
the original SCSI-1 standard.
SCSI-3 The next SCSI
specification, that adds features to
the SCSI-2 standard.
SCSI bus A host adapter and one
or more SCSI peripherals
connected by cables in a linear
chain configuration. The host
adapter may exist anywhere on
the chain, allowing connection of
both internal and external SCSI
devices. A system may have more
than one SCSI bus by using
multiple host adapters.
SCSI device Any device
conforming to the SCSI standard
that attaches to the SCSI bus by
means of a SCSI cable. This
includes SCSI host adapters and
SCSI peripherals.
SCSI ID A unique identification
for each SCSI device on the SCSI
bus. Each SCSI bus has fifteen
available SCSI IDs numbered 0
through 15 for Wide SCSI or 0-7
for 8-bit SCSI. The host adapter is
assigned ID 7, which gives it
priority to control the bus.
SDMS (SCSI Device
Management System) A
Symbios software product that
manages SCSI system I/O.
single-ended SCSI A hardware
specification for connecting SCSI
devices. It references each SCSI
signal to a common ground, as
opposed to differential SCSI and
low-voltage differential SCSI,
which use a separate return for
each signal.
synchronous data transfer
One of the ways data is
transferred over the SCSI bus.
Transfers are clocked with
fixed-frequency pulses.
System BIOS Controls the low
level POST (Power On Self Test)
and basic operation of the CPU
and computer system.
termination The electrical
connection required at each end of
the SCSI bus, composed of a set of
resistors.
Ultra SCSI A standard for SCSI
data transfers. It allows a transfer
rate of up to 20 MBytes/sec over
an 8-bit SCSI bus, and up to 40
MBytes/sec over a 16-bit SCSI
bus. STA (SCSI Trade
Association) supports using the
term “Ultra SCSI” over the older
term “Fast-20.”
Ultra2 SCSI A standard for SCSI
data transfers. It allows a transfer