Starting Your Product › How to Configure Without CA CSM › Define OPSLOG and Checkpoint VSAM Linear Data Sets › How You Place the DIV Data Sets

How You Place the DIV Data Sets

The placement of the DIV data sets for the CA OPS/MVS OPSLOG Browse function and REXX global variable checkpoint facility should be as though they are page data sets. These data sets should never be placed on shared DASD, thus avoiding cross-system lockouts, and they should also never be on volumes that have page data sets or other data sets with high levels of I/O, RESERVE activity, or both.

Following is a diagram of correct placement of the DIV data sets:

Following is a diagram of incorrect placement of the DIV data sets:

Important! Disregarding the above may result in degraded performance for the entire system, the eventual need to re-IPL the system, or both!