RDF/IMP and IMPX System Management Manual (RDF 1.3+)

Compaq NonStop™ RDF/IMP and IMPX System Management Manual—522204-001
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About This Manual
The Remote Database Facility (RDF) subsystem enables Compaq NonStop™ Series
users at a local (primary) system to maintain a current, online copy of their database on
one or more remote (backup) systems, protecting stored information from damage that
might occur at the primary system. RDF accomplishes this by sending audit trail
information, generated at the primary system by the Compaq NonStop™ Transaction
Manager/MP (TM/MP) product, over the network to the backup system. At the backup
system, RDF software uses the transported information to update the backup database so
that it reflects all changes made to the primary database. The backup database is usually
current within seconds of the primary. If system capability is lost at the primary system,
service can be recovered quickly at the backup system using the live backup database.
This manual describes the RDF subsystem as implemented in version 1, update 3 of the
Compaq NonStop
™ RDF/IMP and RDF/IMPX products. It contains introductory and
conceptual information for new users, followed by directions for installing, configuring,
and operating RDF and managing the RDF environment. It covers activities at both the
primary and backup sites, and fully describes all commands available to users. It
provides complete reference information for these commands, including their syntax and
semantics. Finally, it lists all RDF messages and describes their meaning and any
corrective actions that users must take.
Who Should Read This Manual
This manual contains information for everyone responsible for RDF installation,
management, and operations on NonStop™ Series systems:
•
System managers
•
System operators
•
Database administrators
•
System analysts
•
Application designers
Before reading this manual, you should be familiar with NonStop
™ Series system
architecture. You should also understand the TM/MP product on which RDF is based,
and the Transaction Management Facility (TMF) subsystem, which is the main
functional component of the TM/MP product. For this understanding, you can read the
TM/MP manuals listed under Related Reading
.