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

Installing and Configuring RDF
Compaq NonStop™ RDF/IMP and IMPX System Management Manual—522204-001
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Configuring RDF
To configure an RDF extractor process named $EXT to run as a process pair in CPUs 5
and 3 of the primary system, at a priority of 185, with an RTD warning threshold of 360
seconds, issue the following commands:
]SET EXTRACTOR PROCESS $EXT
]SET EXTRACTOR CPUS 5:3
]SET EXTRACTOR PRIORITY 185
]SET EXTRACTOR RTDWARNING 360
]ADD EXTRACTOR
You can issue ADD EXTRACTOR commands only when RDF is stopped.
Receiver Process
Use SET RECEIVER and ADD RECEIVER commands to configure the following
receiver parameters:
•
CPUS primary-CPU : backup-CPU
•
EXTENTS
•
PRIORITY
•
PROCESS
•
RDFVOLUME
•
SLOWMODE
The CPUS option value specifies the processors in the backup system in which the
receiver is to run.
The EXTENTS option value specifies the size of the primary and secondary extents for
all image trail files on all image trails.
The PRIORITY option value specifies the priority at which the receiver will run. You
should set the receiver’s priority higher than that of any application’s process and higher
than that of any RDF updater process.
The PROCESS option value, if present, supplies a name for the receiver process. If you
choose to name the receiver, you should specify a meaningful mnemonic such as
$RECV. The process name can be any unique valid process name up to 5 characters,
including the $ symbol. However, you cannot specify Compaq reserved process names
that are of the form $Xddd, $Yddd, or $Zaaa, in which d is any numeric character and
a is any alphanumeric character.
If you omit the PROCESS option, the operating system selects a name for the receiver
process.
The RDFVOLUME parameter specifies which volume on the backup system will
contain the receiver’s master image trail. The file naming convention for image trail files
is $volume.control-subvolume.AAnnnnnn, where n is a digit. For example, the
first image file is named $volume.control-subvolume.AA000001. You cannot
specify the subvolume name because that name is controlled by RDF.