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The Hardware Error Display (1.3) provides information on the errors that occur on the computer system. The Error Device Statistics are recorded in the SYS1.LOGREC system data set. This file usually resides on the system residence (SYSRES) volume and is present in all z/OS systems.
The error records written to LOGREC document hardware failures, selected software failures, and system error conditions. You can use the information that LOGREC provides for diagnostic and measurement purposes. Vendor personnel use this information to service the hardware.
One way that a data center can effectively lower its hardware error rate is to run the IBM Environmental Recording Editing and Printing (EREP) program to identify devices that are experiencing intermittent failures. These devices can then be singled out for service before permanent failures occur.
A variety of EREP reports can then be generated using the SYS1.LOGREC records as input. The EREP reports include the System Summary Report, System Exception Report, Trends Report, Threshold Report, and the Detail Edit and Summary Report. For EREP to be an effective tool, an IBM field engineer or a member of the data center’s technical support staff should review these reports on a regular basis.
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