RDF System Management Manual for H-Series RVUs (RDF 1.8)

About This Document
The Remote Database Facility (RDF) subsystem enables 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
NonStop Transaction Management Facility (TMF) 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 8 (RDF 1.8) for
RDF/IMPX and RDF/ZLT on H-series RVUs.
This manual 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.
Supported Release Version Updates (RVUs)
This manual supports all H-series RVUs until otherwise indicated in a replacement publication.
Intended Audience
This manual contains information for everyone responsible for RDF installation, management,
and operations on HP Integrity NonStop™ systems:
• System managers
• System operators
• Database administrators
• System analysts
• Application designers
Before reading this manual, you should be familiar with Integrity NonStop system architecture.
You should also understand the TMF product on which RDF is based. For information about
TMF, see the TMF manuals listed in “Related Information”.
New and Changed Information in This Edition
Besides minor corrections and clarifications throughout the manual, the significant new and
changed information contained in this manual includes:
Updated the syntax examples for defining a reverse trigger in these sections.“ADD” (page 179) and “SET
TRIGGER” (page 324)
Added this section to describe how to use the mapfile, maplog, and the updater
configuration record to support mapping between primary system and backup
system subvolumes.
Chapter 12 (page 265)
Supported Release Version Updates (RVUs) 27