Monitor the health checks generated for CA Disk.
Business Value:
Health checks alert you to conditions that could prevent CA Disk from running properly, if left uncorrected. They guide you in addressing the problem.
Extra Considerations:
The following health checks are provided for CA Disk:
To get the best utilization of the tape device by using the least number of resources, set the sysparm CARTCALC to Y. This setting offers a higher utilization for each cartridge regardless of type. A tape library with mixed capacity tapes or with high capacity tapes must have CARTCALC specified as Y, or you can have underutilized cartridges.
Set the sysparm DSNDUPVL to Y if you use volume pooling. A default to N can cause an incorrect selection of an older DSNINDEX record. The selection can happen when a data set is moved or restored to a different volume.
Set the sysparm IOCHNBLK to 9 to get the best performance on tape I/O activity during a Backup or Archive job. The best performance on tape I/O gives reduced processing time for your required Backup and Archive jobs, shrinking the Backup/Archive processing window.
Set the sysparm IOTRACKS to 30 to get the best performance on disk I/O activity during a Backup or Archive job. Getting the best performance on DASD I/O results in reduced processing time for your required Backup and Archive jobs.
Set IXMQTIME to 0300 (30 seconds) to allow the needed data sets to be restored in a timely manner. When using a Files Data Set (FDS), integrity is maintained using enqueues which can prevent other CA Disk jobs from processing. Because IXMAINT is typically a longer running job, restoring critically needed data sets can be delayed.
To allow MERGE to process the ARCHVOLs by the least space used, set the sysparm MERGSORT to S. This setting allows MERGE to process more efficiently when smaller processing windows are needed.
More Information:
For more information, see the appendix Health Checks in the User Guide.
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