RDF/IMP, IMPX, and ZLT System Management Manual

Operating and Monitoring RDF
HP NonStop RDF/IMP, IMPX, and ZLT System Management Manual—524388-002
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Changing Configuration Parameters
Using RDF Status Data to Control TMF Audit Dumping
You can use the STATUS RDF command to determine when the RDF extractor has
finished processing the audit file that TMF wants to dump. The TMF/RDF trail listed for
the extractor in the STATUS RDF display indicates the TMF audit trail file that the RDF
extractor is currently processing.
Approximately 30 seconds after the STATUS RDF display shows that the extractor’s
sequence value is greater than the number of the audit trail that TMF wants to dump, it
is safe to mount the tape and let TMF dump the audit trail.
Changing Configuration Parameters
After RDF starts, you can change the following configuration parameters online as the
need arises:
•
The priority at which each RDF process runs
•
The EMS log
•
The purger’s RETAINCOUNT
•
PURGETIME
•
UPDATERDELAY
The RETAINCOUNT purger process configuration parameter specifies how many
image trail files must be retained on disk for each image trail.
The process priority, EMS log (collector), RETAINCOUNT, PURGETIME, and
UPDATERDELAY are the only configuration parameters that can be altered while RDF
is running. To change any other configuration parameters, you must first stop RDF OR
UPDATING as directed under Restarting RDF in section 5.
To change parameter values, you access RDFCOM and use the ALTER command.
ALTER is a restricted command; it can be issued only by members of the super-user
group. See the description of the ALTER
command in section 8.
Process Priority
All configured RDF processes should run at a priority greater than that of any
application process. Furthermore, the RDF processes should run at priorities relative
to one another as follows:
•
On the primary system, the monitor and extractor processes can run at the same
priority but it is recommended that you set the extractor’s priority slightly lower than
that of the monitor.
•
On the backup system, the receiver process should run at a higher priority than
any updater process.