SRG-OS-000343-GPOS-00134
The operating system must immediately notify the SA and ISSO (at a minimum) when allocated audit record storage volume reaches 75 percent of the repository maximum audit record storage capacity.
Canonical Source
SV-203702r971542_rule ( from General Purpose Operating System Security Requirements Guide )Description
If security personnel are not notified immediately when storage volume reaches 75% utilization, they are unable to plan for audit record storage capacity expansion.