DEC 4000 600 series Owner's Manual page 228

striping
A storage option that increases I/O performance. With disk
striping, a single file is split between multiple physical disks.
Read and write disk performance is increased by sharing
input/output operations between multiple spindles, which allows
an I/O rate greater than that of any one disk member of the
stripe set. In striping, the loss of any one member of the stripe
set causes loss of the set. Striping is particularly useful for
applications that move large amounts of disk-based information,
for example, graphic imaging. Contrast with RAID.
symmetric multiprocessing (SMP)
A processing configuration in which multiple processors in a
system operate as equals, dividing and sharing the workload.
OpenVMS AXP SMP provides two forms of multiprocessing:
multiple processes can execute simultaneously on different
CPUs, thereby maximizing overall system performance; and
single-stream application programs can be partitioned into
multistream jobs, minimizing the processing time for a particular
program. Contrast with distributed processing.
system bus
The private interconnect used on the DEC 4000 AXP CPU
subsystem. This bus connects the B2001 processor module, the
B2002 memory module, and the B2101 I/O module.
system disk
The device on which operating system software resides.
TCP/IP
Transmission Control Protocol/Internet Protocol. A set of
software communications protocols widely used in UNIX
operating environments. TCP delivers data over a connection
between applications on different computers on a network; IP
controls how packets (units of data) are transferred between
computers on a network.
thickwire
An IEEE standard 802.3-compliant Ethernet network made of
standard Ethernet cable, as opposed to ThinWire Ethernet cable.
Also called standard Ethernet. Contrast with ThinWire.
Glossary–12