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

Usage Guidelines
The SET NETWORK command enters the RDF network parameter values specified in this
command into the RDF configuration table in memory. This table serves as an input buffer only,
and so these values do not affect the subsystem until they are applied to the RDF configuration
file with the ADD command.
Example
To configure the primary system \RDF04 and backup system \RDF06, issue the following
commands after RDF has been initialized:
SET NETWORK PRIMARYSYSTEM \RDF04
SET NETWORK BACKUPSYSTEM \RDF06
SET NETWORK REMOTECONTROLSUBVOLUME RDF04
SET NETWORK PNETTXVOLUME $DATA07
ADD NETWORK
SET PURGER
The SET PURGER command sets purger process configuration parameters within the RDF
configuration memory table. The supplied values are not applied to the RDF configuration file,
however, until you issue an ADD PURGER command.
SET PURGER purger-option
where purger-option is:
{CPUS primary-CPU : backup-CPU }
{PRIORITY priority }
{PROCESS process-name }
{PURGETIME mins }
{RETAINCOUNT num }
CPUS primary-CPU : backup-CPU
identifies the CPUs in which the purger process is to run as a process pair on the backup
system; primary-CPU is the primary CPU; backup-CPU is the backup CPU. Values range
from 0 through 15. The default is 0:1.
PRIORITY priority
identifies the execution priority for the purger process; priority is the execution priority,
from 10 through 199. The default is 165.
PROCESS process-name
specifies the process name for the purger process; process-name is any unique, valid process
name of up to 5 characters; the first character must be a dollar sign ($). You cannot specify
any of the reserved process names listed in the Guardian Procedure Calls Reference Manual.
Names longer than 5 characters, including the $ sign, are invalid.
This parameter is not optional. You must explicitly name the purger process.
PURGETIME mins
specifies the number of minutes the purger process waits between attempts to purge redundant
image trail files. The default value is 60 minutes.
RETAINCOUNT num
specifies how many image trail files must be retained on disk for each image trail (including
the image trail file currently in use). num must be within the range 2 to 5000. If you do not
explicitly set this configuration parameter, the default value is 2. This configuration parameter
is only relevant for the triple contingency feature; otherwise, this parameter should be left
at its default value.
This parameter is important because if you lose the primary system, the triple contingency
protocol will work only if all of the missing audit information at the backup system which is
further behind in its RDF processing is still on disk on the other backup system.
212 Entering RDFCOM Commands