The OS concept of SMFID is introduced for CA VM:Tape. SMFID is a unique 4-character ID used in z/OS to uniquely identify systems in a sysplex. CA 1 copies the SMFID to all audit records (using the TMAUCPU field). An SMFID record is added to the CONFIG file to define this constant value. This CONFIG file record is required when an OSTMC is specified. The format of the SMFID record is:
SMFID smfid
Note: For STAM, an SMFID can be specified on the STAM CONFIG file record. The CONFIG file processing routine ensures these values are the same.
Another CONFIG file change accommodates two TMC minidisks. One minidisk contains the TMC file and the other contains a data set that will become the new TMC.
The alternate TMC minidisk is specified using a new CONFIG file record:
ALTTMC vaddr
Where vaddr is the virtual device number of an attached minidisk that contains the pre-allocated alternate TMC. If this record is specified, the device must contain a dataset with the TMC dsname appended with .N. The check for this is done at system startup and if not found message VMTTMR075E is issued and CA VM:Tape initialization fails.
If CA VM:Tape detects that the TMSXTEND utility is running and there is no ALTTMC record in the config file, CA VM:Tape issues message 259E and notifies the TMSXTEND utility that CA VM:Tape cannot participate causing TMSXTEND to terminate.
Note: The TMC file is the dsname specified on the OSTMC CONFIG file record. When CA VM:Tape starts, it looks for the file specified on the OSTMC record. If the file is not found, it looks for the file on the disk specified on the ALTTMC record. If the dataset is found, CA VM:Tape issues message 268I, continues to initialize, and uses the TMC specified on the ALTTMC record. Normally, the ALTTMC record is contained in the CONFIG file only when a TMSXTEND is ready to run.
When TMSXTEND completes, the CA VM:Tape administrator must manually update the configuration, including the CP directory entry for CA VM:Tape, to remove the ALTTMC record and point the OSTMC record to the appropriate disk that contains the new TMC.
CA VM:Tape checks to see if a USEREDIT exit exists and loads it if an OSTMC is defined in the CONFIG file only if an old format TMC is used. After a TMSXTEND is run, the USEREDIT exit is no longer required.
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