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

Introducing RDF
HP NonStop RDF/IMP and IMPX System Management Manual—524388-001
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Receiver Process
Receiver Process
A receiver process is a process pair that runs on the backup system. There is one
receiver for each configured extractor. A receiver process accepts audit records from
its extractor, sorts them, and then writes them to the appropriate RDF image trail, as
shown in Figure 1-6. (The restartability of a receiver ensures the receiver's correctness
at process takeover or under any conditions requiring resynchronization with its
extractor.)
A receiver determines which updater will apply the data, and sorts the data into the
image trail used by that updater. The records in the image trails are subsequently used
by updater processes to update the backup database.
Each receiver also creates image trail files, preallocates extents, and initiates rollovers.