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RACF Audit
A RACF audit is a comprehensive evaluation of security that examines the RACF database and related z/OS settings on an IBM Mainframe. The audit is performed by finding deviations from IBM best practice or installation specific settings. The audit may offer remedial action to reduce vulnerabilities.

Definitions
RACF is an acronym for Resource Access Control Facility.

z/OS is the most common IBM Mainframe operating system. It was first released in 1974 as MVS and has had several distinct incarnations as capabilities were added. MVS was renamed to z/OS in 2000.

Audit Items
IPL Volume and Device SMF Parameters