The alarm database typically resides in a station file system, under the station’s “alarm” folder, as shown in Figure 223.

Starting in NiagaraAX-3.2, it is possible to use the rdbAlarmService and configure a relational database (RDBMS) for storage of alarm records. This alternative to the standard alarm database requires an RdbmsNetwork connection to a supported database. See the NiagaraAX-3.x RdbmsNetwork Driver Guide for more details.

Use of an RDBMS to store NiagaraAX alarm records is different than exporting histories to an RDBMS. Exported histories also still reside in the station's default history database (^\history\segN\(etc)), whereas, configuring for RDBMS storage of alarms replaces use of the station's default alarm database (^\alarm\alarm.adb).