The tape duplexing feature of CA View allows a site to obtain a duplicate copy of their backup tape data sets. When this feature is activated, an additional tape is mounted during the backup cycle and during direct to tape archival. All I/O to the original backup tape is simultaneously written to the duplex tape data set. This feature is activated by specifying unit2-name which is a subparameter of the STORGRPn(0-9) initialization parameter. Unit2-name is used to allocate the tape duplex data set.
Tape duplex data sets are created and deleted in the same method as tape archival data sets.
DTVSER1 and DTVSER2 can be specified to assign a range of duplex tapes for CA View to use. DTVSER1 and DTVSER2 are sub parameters of the STORGRXn(0-9) initialization parameter.
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