DEC 4000 600 series Owner's Manual page 227

SCSI
Small Computer System Interface. An ANSI-standard interface
for connecting disks and other peripheral devices to computer
systems. See also fast SCSI.
self-test
A test that is invoked automatically when the system powers up.
serial control bus
A two-conductor serial interconnect that is independent of the
system bus. This bus links the processor modules, the I/O, the
memory, the power subsystem, and the operator control panel.
It reports any failed devices to the processor module so the
processor module can illuminate LEDs on the operator control
panel.
shadowing
See volume shadowing.
shadow set
In volume shadowing, the set of disks on which the data is
duplicated. Access to a shadow set is achieved by means of a
virtual disk unit. After a shadow set is created, applications and
users access the virtual disk unit as if it were a physical disk.
See also volume shadowing.
SMP
See symmetric multiprocessing.
storage array
A group of mass storage devices, frequently configured as one
logical disk.
stripe set
A group of physical disks that are used for disk striping. See
also striping.
Glossary–11