HP Guardian User Manual page 428

Glossary
processor. (1) The central processing unit (CPU). The processor reads program instructions,
moves data between processor memory and the ServerNet addressable controllers
(SACs), and performs arithmetic operations. (2) One or more computer chips, typically
mounted on a logic board, that are designed to perform data processing or to manage a
particular aspect of computer operations. Most NonStop™ Kernel systems have a
minimum of two processors that can act as backups to each other.
production management. The set of regularly scheduled activities that keeps the
applications on a system or network of systems running smoothly. These activities
include administering storage media such as disks and tapes, managing space in
processors and disks, and starting or stopping system components. One of the operations
disciplines in the operations management model. See
(OM model).
reconfiguration. See
reconfiguration outage class. An outage class that includes all planned outages. Examples
include down time required for planned maintenance such as software upgrades, and
configuration changes such as adding a new disk or restructuring a database. See
class.
remote mirroring. A pair of mirrored disk drives that are used together as a single logical
drive in which the primary drive and the backup (mirror) drive are located in
geographically distinct (remote) locations. Each byte of data written to the primary drive
is also written to the mirror drive. If the primary drive fails, the mirror drive can
continue operations. By providing geographic separation of mirrored volumes, remote
mirroring protects the database from local environment hazards.
SAC. See ServerNet addressable controller
SAN. See system area network
Safeguard. A group of programs that supplements the security features of the system,
providing users of NonStop™ Kernel systems and distributed networks with a set of
services for protecting the components of the system or network from unauthorized use.
Safeguard services include authentication, authorization, and auditing.
SCF. See Subsystem Control Facility (SCF).
SCP. See Subsystem Control Point (SCP).
scratch tape. A labeled tape whose expiration date has passed. Scratch tapes are used for
output.
security management. Activities that provide support for establishing and maintaining
system security. One of the operations disciplines in the operations management model.
See operations management model (OM model).
sensitive command. A Subsystem Control Facility (SCF) command that can be issued only
by a user with super-group access, by the owner of the subsystem, or by a member of the
reconfiguration outage class.
(SAN).
Guardian User's Guide —425266-001
Glossary -12
operations management model
(SAC).
processor
outage