Guardian User's Guide
Glossary
Guardian User’s Guide—425266-001
Glossary-9
offline.
offline. Used to describe tasks that can be performed only when the system is down. Contrast 
with online.
OM model. See operations management model (OM model).
OMF. See Tandem Object Monitoring Facility (OMF).
online. Used to describe tasks that can be performed while the system is up. Contrast with 
offline.
online-ready site. A fully operational backup site (also known as a hot site) that has all 
necessary hardware and software. Archived data is sent to the operational-ready site but 
is not loaded onto the system until a disaster occurs.
ONS. See Open Notification Service (ONS)
.
Open Notification Service (ONS). (D-series only) A data encapsulation and forwarding 
server that gathers EMS events from the system event log, translates them into Simple 
Network Management Protocol (SNMP) trap format, and forwards them to the SNMP 
Agent, thereby facilitating delivery of NonStop™ Kernel subsystem-specific data to 
problem management components that comply with SNMP and that are external to the 
NonStop™ Kernel system.
Open System Services (OSS). An open system environment available for interactive or 
programmatic use with the NonStop™ Kernel. Processes that run in the OSS 
environment use the OSS application program interface; interactive users of the OSS 
environment use the OSS shell for their command interpreter.
operational-ready site. A fully operational backup site (also known as a hot site) that has all 
necessary hardware and software. Archived data is sent to the operational-ready site but 
is not loaded onto the system until a disaster occurs.
operations area. The area where you locate the computer systems and peripherals, for 
example a computer room or an office.
operations management. The operation and management of systems and networks in 
support of your business. Planning for operations management includes establishing and 
fulfilling service-level agreements, defining and understanding the OM model, and 
optimizing the features of NonStop™ Kernel systems and software. See operations 
management model (OM model).
operations management activities. Activities, as defined by the NonStop™ Kernel 
operations management model, that support a production system, plan for all aspects of 
the production system, control the introduction of change into the production system, 
and operate the production system.
operations management model (OM model). A model for managing NonStop™ Kernel 
systems that categorizes operations management functions into the following 
disciplines: production management, problem management, change management, 
configuration management, security management, and performance management.










