OVNM 5.3 - Operations Agent for NonStop Object Configuration Client Guide

Appendix A: Subsystems Managed 79
17. RDF
RDF monitors the changes made to a production database on a local (primary) system and maintains a
copy of that database on one or more remote (backup) systems. It applies changes to the backup database
as soon as they are detected on the primary system, RDF keeps the backup database continuously up to
date with changes made by business applications on the primary system. You are therefore able to switch
your business operations from the primary system to the backup system with minimal interruption and loss of
data in the event of planned or unplanned outages of the primary system.
The thresholds in this subsystem allow you to monitor the activities of RDF to make sure it is operating as
you expect to reduce the chance of any data loss or extended RDF recoveries.
18. SNAX-XF
This is a part of the SNAX family of products available on the HP NonStop platform. SNAX-XF primary lines
control and serve attached SNA peripheral nodes (SNA type 2.0 nodes). This subsystem in OCC helps in
managing the LUs’ and PUs’ defined in this subsystem.
19. SPOOLER
The spooler subsystem is a set of utilities that form an interface between you & your application programs
and the print devices on a system. The spooler receives output from an application and stores data on the
disk. When the print device is available the output is sent to that device for printing. Predefined
counters/modifiers help in managing this important subsystem.
20. SPOOLERP
This is the new version of Spooler that is supplied for the HP NonStop S-Series. This subsystem allows the
user to monitor and manage Spooler objects like the COLLECTOR, DEVICES and PRINT PROCESSES.
21. TAPE
This subsystem supervises all tape operations within the HP NonStop platform. Counters such as Mounts are
predefined and are simple to set up.
22. TCPIP
The S-Series HP NonStop platform uses TCPIP as a major protocol to communicate. TCPIP stacks or
processes and ports need to be monitored closely and actively. This subsystem achieves that through
predefined counters and modifiers.
23. TELCO
A telecommunications protocol defined by the International Telecommunication Union (ITU) as a way to
offload PSTN data traffic congestion onto a wireless or wire line digital broadband network. The standard
defines the procedures and protocol by which network elements in the public switched telephone network
(PSTN) exchange information over a digital signaling network to effect wireless (cellular) and wire line call
setup, routing and control. The TELCO subsystem will only be available if you have installed the TELCO
plug-in.
24. TMF
Transaction Monitoring Facility or TMF is a major subsystem on the HP NonStop platform. It provides
services for transactions like Rollback and Roll forward (in case of system failures), Audit trails and Audit
dumps (for data integrity). Various applications use these services for the Transaction protection that is built
into this subsystem.
25. X25
This is a commonly used communication protocol and is available on the HP NonStop platform. The
counters/modifiers predefined in this subsystem help manage objects using this protocol.