VMS Help SET, AUDIT, Qualifiers, /RESOURCE  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /RESOURCE=keyword[,...]

    Enables or disables the monitoring of disk volumes to ensure
    adequate space for audit journal entries; it also specifies the
    monitoring method to use. The /JOURNAL qualifier is required. For
    more information about resource monitoring, refer to the OpenVMS
    Guide to System Security.

    Keyword          Description

    DISABLE          Disables monitoring on the disk volume
                     containing the audit journal.

    ENABLE           Enables resource monitoring on the disk volume
                     containing the audit journal.
    MONITOR_         This keyword is obsolete.
    MODE=mode
                     Specifies the method the audit server uses to
                     monitor available resources. Specify one of the
                     following keywords:

                     COUNT      Controls whether resource monitoring
                                is based on the amount of free disk
                                space required to store a fixed
                                number of event messages.

                     PERCENTAGE Controls whether resource monitoring
                                is based on the percentage of the
                                disk volume or volume set available.

                     SPACE      Controls whether resource monitoring
                                is based on the number of free blocks
                                on the disk. The is the default
                                method used for resource monitoring.

                     TIME       Controls whether resource monitoring
                                is based on the amount of free disk
                                space needed to store events which
                                occur over a fixed period of time (in
                                seconds).