HP OpenVMS 8.x manual Dssi

CI	Computer interconnect. A type of I/O subsystem. It links computers to each other and to HSx
	devices (for example, an HSJ or HSG).
	See also CI-only cluster, DSSI.
CI-only cluster	A computer system consisting of several computers attached to a computer interconnect (CI)
	through which it communicates with other computers in the cluster. These computers share a
	single file system. CI provides redundant paths.
	See also computer interconnect (CI), DSSI-only cluster.
Common Data	See CDSA.
Security
Architecture
complex	See server complex.
computer	See CI.
interconnect
concurrent	The entire OpenVMS Cluster is shut down and unusable while upgrading each system disk.
upgrade	When the cluster reboots, all cluster members start up the upgraded version of the OpenVMS
	operating system.
core	The actual data processing engine within a cell-based processor. A single processor can have
	multiple cores. Also referred to as a logical CPU.
core I/O	Provides the base set of I/O functions required by every nPartition on a cell-based Integrity
	server. Includes the partition console interface and the network interface.
	See also cell, cell-based server, nPartition.
DECnet Phase IV	Networking software that allows OpenVMS systems to participate in network task-to-task
	communications to transfer and copy files, print files, and run applications. DECnet Phase IV
	networking capabilities are defined in the DIGITAL Network Architecture (DNA) Phase IV. A
	system-integrated product, DECnet for OpenVMS I64 is a component of the Foundation
	Operating Environment (FOE) on the Integrity servers license bundle.
	See also DECnet-Plus, TCP/IP Services for OpenVMS.
DECnet-Plus	Formerly known as DECnet/OSI, DECnet-Plus is the networking software that offers the
	capabilities defined in the DIGITAL Network Architecture (DNA) Phase V protocols.
	DECnet-Plus provides the newest DECnet features such as extended addressing and
	downline-load performance enhancements. DECnet-Plus integrates DECnet and OSI protocols
	and provides a linkage to TCP/IP. DECnet-Plus for OpenVMS I64 is a component of the
	Foundation Operating Environment (FOE) on the Integrity servers license bundle.
	See also DECnet Phase IV, TCP/IP Services for OpenVMS.
DECwindows	A layered product that provides support for both OSF/Motif, a standards-based graphical user
Motif for	interface, and the X user interface (XUI) in a single, run-time and development environment.
OpenVMS	DECwindows Motif displays the OSF/Motif user interface, but applications written on either
	toolkit will run regardless of the environment selected by the user.
device name	The name used to identify a device on the system. A device name indicates the device code,
	controller designation, and unit number, such as DKA0, where DK is the device code, A is the
	boot device controller designation, and 0 is the unit number on the boot device.
diagnostic	When present on an OpenVMS I64 system disk, this partition corresponds to the contents of
partition	SYS$MAINTENANCE:SYS$DIAGNOSTICS.SYS on the disk. The diagnostic partition and its
	contents are intended and reserved for use by HP Services. Customer access and use is not
	supported.
Digital Storage	See DSSI.
System
Interconnect
disk server	A computer within a local area cluster that provides an access path to CI, DSSI, and locally
	connected disks for other computers that do not have a direct connection.
DSSI	Digital Storage Systems Interconnect. A medium-bandwidth interconnect.
	See also computer interconnect (CI), DSSI-only cluster.

272 Glossary