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

Entering RDFCOM Commands
Compaq NonStop™ RDF/IMP and IMPX System Management Manual—522204-001
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Command Overview
START RDF
The START RDF command starts RDF.
UPDATE ON
enables update processing on the backup system; this is the default value.
UPDATE OFF
disables update processing on the backup system.
The UPDATE OFF option prevents the receiver from building and maintaining a
transaction status table and prevents the updater processes from updating the backup
volumes. RDF image files, however, are not purged from the backup system.
Where Issued
Primary system only.
Security Restrictions
You can issue the START RDF command only if you are a member of the super-user
group and have remote passwords on both the primary and backup systems.
RDF State Requirement
You can issue the START RDF command only after TMF has been started and RDF has
been previously initialized.
Usage Guidelines
The decision to start RDF is a management decision that should be carefully planned
and performed. Operators should never issue this command strictly on their own
initiative.
For information about when to use the START RDF command and how it affects the
primary and backup databases, see Restarting RDF
in section 5.
If you have initialized the TMF and RDF subsystems before issuing the START RDF
command, RDF automatically begins transmitting audit data from the beginning of the
first audit trail file.
START RDF [, UPDATE {ON | OFF}]
Caution. If TMF dumps any audit trail files to disk while RDF is stopped, you must either
restore the dumped files to disk or resynchronize the primary and backup databases before
restarting RDF.
If you initialize RDFs after a STOP RDF command is issued at the primary system, you may
need to resynchronize the databases before restarting RDF.