SMF Records/SMF Type 19 Direct Access Volume

SMF Type 19 Structure
The SMF type 19 contains data of all DASD volumes online in an LPAR during the time the SMF record is written. There is one record per volume. SMF Type 19 records are written for every processed SWITCH SMF command. This is usually once a day shortly after midnight, but could occur more often during the day, depending on your installation. Therefore it is very important to preselect the SMF dump data in the SYSIN statement of the JCL precisely to avoid processing redundant DASD data in the REXX program. In the example in the first chapter the data selection was confined to the time between midnight and one o'clock in the morning to reflect this.

The structure of the SMF type 19 record is relatively simple. It consists of just one section with the usual offsets to fields.

For more information on field values and offsets see [L1] or [L2].

REXX Example for SMF Type 19
Example: REXX SMF19 to create a .csv file with the values of interest