RDF/IMP, IMPX, and ZLT System Management Manual

Introducing RDF
HP NonStop RDF/IMP, IMPX, and ZLT System Management Manual—524388-002
1-3
RDF Subsystem Overview
Figure 1-1 illustrates a basic RDF configuration that protects data volumes configured
to a Master Audit Trail (MAT) and an auxiliary audit trail.
In Figure 1-1, there are 20 audited volumes on the primary system ($D1 through
$D20). Only volumes $D1 through $D15, however, are configured for RDF protection.
Audit information for volumes $D1 through $D10 and $D16 through $D20 is sent to the
master audit trail (MAT). The RDF master extractor process reads the MAT and sends
audit information associated with volumes $D1 through $D10 to the RDF master
receiver process on the backup system.
Audit information for volumes $D11 through $D15 is sent to the auxiliary audit trail. The
RDF auxiliary extractor process reads the auxiliary audit trail and sends audit
information associated with volumes $D11 through $D15 to the RDF auxiliary receiver
process on the backup system.
Figure 1-1. Basic RDF Configuration
PROTECTED
NOT
PROTECTED
Backup
System
001CDT .CDD
Extractor
Master
Receiver
Master
Monitor
RDFCOM
$D1 – $D10
$UP1 – $UP10
$D1 – $D10
$D16 – $D20
Master
Audit
Trail
PROTECTED
$UP11 – $UP15
$D11 – $D15
AUX01
Audit
Trail
$D11 – $D15
Receiver
Auxiliary
Extractor
Auxiliary
Updaters
Updaters
AUX01
Master
Image
Trail
Secondary
Image
Trail
Secondary
Image
Trail
Primary
System
Purger