6. DATA SOURCES › 6.2 VTS Component Data Sources › 6.2.1 IBM VTS SMF Data

6.2.1 IBM VTS SMF Data

The VTS component uses IBM Tape Library Statistics (SMF type
94) records to produce database files that show IBM VTS
virtual tape system activity.

SMF Type 94 Record Creation
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The Library Manager component of each IBM 34xx Self Managed
Tape Library creates hourly interval records containing
statistics for each VTS attached to the tape library and
broadcasts them to all attached z/OS hosts.  A z/OS tape
error-recovery program reads each statistics record, creates
an SMF type 94 record, and writes it to an SMF MANx file or
SMF logstream.

In the case of a peer-to-peer VTS, a total of three SMF type
94 records are created each hour:

o one for the user-interface (UI) VTS
o one for the secondary VTS
o one for the composite VTS


To ensure that the Library Manager is creating the
statistical records used to create SMF type 94 records,
statistics must be enabled on the Library Manager console.
Refer to IBM Library Manager documentation for specific
instructions on activating statistics for the tape library.

In addition, the SYS1.PARMLIB(SMFPRMnn) member must specify
SMF type 94 records for each z/OS system where record
collection is desired.

The following sections describe the SMF type 94 record and
strategies for collecting the data.

1 - SMF Type 94 Record Description
2 - Collecting SMF Type 94 Records