RDF/IMP and IMPX System Management Manual (RDF 1.4+)

Installing and Configuring RDF
HP NonStop RDF/IMP and IMPX System Management Manual—524388-001
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Configuring RDF
To configure an RDF purger process named $PURG to run as a process pair in CPUs
0 and 2 of the backup system at a priority of 185, and to ensure that at least six image
trail files are always retained on disk, issue the following commands:
]SET PURGER PROCESS $PURG
]SET PURGER CPUS 0:2
]SET PURGER PRIORITY 185
]SET PURGER RETAINCOUNT 6
]SET PURGER PURGETIME 30
]ADD PURGER
You cannot start RDF until you have configured a purger process.
You can issue ADD PURGER commands only when RDF is stopped.
Updater Processes
Use SET VOLUME and ADD VOLUME commands to configure the following updater
parameters:
•
ATINDEX
•
CPUS primary-CPU : backup-CPU
•
EXCLUDE
•
IMAGEVOLUME
•
INCLUDE
•
PRIORITY
•
PROCESS
•
UPDATEVOLUME
You must configure an updater process for each primary system volume to be
protected by RDF.
The CPUS option value specifies the processors in the backup system in which the
updater will run.
The IMAGEVOLUME option value associates this updater process with a specific
image trail you have previously added to the RDF configuration. You cannot add this
updater process, associating it to an image volume, unless you have already added
the image trail with the ADD IMAGETRAIL command. Also, the ATINDEX of this
updater must match the ATINDEX of the associated image trail.
The PRIORITY option value specifies the priority at which the updater will run. You
should set the updater’s priority higher than that of any application’s process but less
than the priority of the RDF receiver process.
The PROCESS option value supplies a name for the updater process. You should
specify a meaningful mnemonic such as $UP01. The process name can be any unique