RDF System Management Manual for J-series and H-series RVUs (RDF 1.10)

REMOTECONTROLSUBVOL (RCSV) Network Attribute
The remote control subvolume (RCSV) is the name of the control subvolume used by the RDF
subsystem configured for the specified primary and backup systems. It is set by this RDFCOM
command.
SET NETWORK REMOTECONTROLSUBVOL subvolume-name
There is no default value.
PNETTXVOLUME Network Attribute
You only use this attribute when configuring the network master. On the master you must include
this attribute within every network configuration record (including the one for the master itself).
This attribute specifies the name of the volume on the particular primary system where the RDF
network master stores an audited network-synchronization file. The specified volume must be a
data volume protected by the RDF subsystem on the primary system and be configured to the MAT.
The PNETTXVOLUME volume is set by this RDFCOM command.
SET NETWORK PNETTXVOLUME volume-name
There is no default value.
Adding the Network Record
When you have finished setting the attributes of a network record for a given RDF subsystem, you
add that information to your current configuration file with this RDFCOM command.
ADD NETWORK
RDF Network Synchronizer (RDFNET) Process
RDF/IMPX and RDF/ZLT include an RDF executable process, the RDFNET process, that can only
be configured within a network master RDF subsystem (and can therefore only be started on the
network master’s primary system).
This process provides a synchronization point within the image trails of all backup systems in an
RDF network. The process does that by updating an audited file named ZRDFNETX on the primary
system of each RDF subsystem in the RDF network. The overhead of this process should be
transparent because the RDFNET process only starts a single transaction every 15 seconds and
only executes a single update against the ZRDFNETX file on the primary system of each RDF
subsystem in the RDF network.
The fully-qualified name of the ZRDFNETX file for each system is:
$volume-name.subvolume-name.ZRDFNETX
where volume-name is the configured PNETTXVOLUME network attribute and subvolume-nameis
the configured REMOTECONTROLSUBVOLUME network attribute.
RDF Network Control Files
These control files exist in the Master Image Trail (MIT) subvolume of all RDF subsystems that are
configured for replication of network transactions: ZRDFLCMT, ZRDFLCM2, and ZNETUNDO.
Additionally, the network master has three more files: ZRDFNMTX, ZRDFNMT2, ZRDFNMT3. These
files contain internal information that RDF needs to execute takeover operations involving an RDF
network correctly. The files are empty until you actually initiate a takeover operation on a backup
system within an RDF network.
Normal RDF Processing Within a Network Environment
Each RDF subsystem within an RDF network conducts its processing individually, as though it were
not involved in an RDF network. That is, for a given RDF subsystem, the extractors read the MAT
and auxiliary audit trails and send data to the receivers. The updaters read their data from their
image trails and apply it to their UpdateVolumes. During normal processing, no RDF subsystem
RDF Network Control Files 281