RDF/IMP, IMPX, and ZLT System Management Manual

HP NonStop RDF/IMP, IMPX, and ZLT System Management Manual—524388-002

11-1

Subvolume- and File-Level

Replication

By default, RDF provides volume-level protection, wherein changes to all audited files

and tables on each protected primary system data volume are replicated to an

associated backup system data volume.

RDF/IMP, IMPX, and ZLT 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 to be replicated. Changes to all other audited

files and tables on the particular volume are ignored.

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 NonStop SQL/MP 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.