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

Compaq NonStop™ RDF/IMP and IMPX System Management Manual—522204-001
11-1
11
Subvolume- and File-Level
Replication
With volume-level protection, all changes to all audited files and tables on each
protected primary system data volume are replicated on an associated backup system
data volume.
In addition, RDF/IMP and IMPX also support subvolume- and file-level replication. To
use this capability, you supply INCLUDE and EXCLUDE clauses when configuring
updaters to identify specific subvolumes and files you want either replicated or not
replicated.
INCLUDE Clauses
INCLUDE clauses explicitly designate those subvolumes, files, and tables residing on a
particular primary system data volume that you want replicated. Changes to all other
audited files and tables on the particular volume are ignored.
If you do not specify any INCLUDE clauses, the default behavior is to include the entire
data volume.
In the following example, only changes to the audited files MYSUBVOL.MYFILE,
MMTEST10.FILE1, and MMTEST10.FILE2 on $DATA01 are replicated:
SET VOLUME CPUS 1:2
SET VOLUME IMAGEVOLUME $IMAGE
SET VOLUME PRIORITY 185
SET VOLUME PROCESS $MM01
SET VOLUME UPDATEVOLUME $DATA01
SET VOLUME INCLUDE MYSUBVOL.MYFILE
SET VOLUME INCLUDE MMTEST10.FILE1
SET VOLUME INCLUDE MMTEST10.FILE2
ADD VOLUME $DATA01
Note. All SQL shared-access DDL operations involve two files – a source file and a target file.
If you are using INCLUDE and EXCLUDE lists to define your RDF configuration and you plan
to execute any such operations on data volumes protected by the RDF subsystem, you must
be certain to define both the source and target files as protected files; if either the source or
target file is not replicated, the updaters will not stop as they are supposed to and the backup
database could be corrupted.