The DataRecoveryService continuously records all database changes in SRAM, and upon reboot from a power event, restores (plays back) these changes. In the initial AX-3.6 release, the "DataRecoveryService" automatically replaced the "PowerMonitorService" in the JACE station's PlatformServices.

Now, the latest JACE-3E and JACE-6E controllers include integral onboard SRAM, making the SRAM option card unnecessary. Although these controllers ship without a NiMH backup battery, you can field install a NiMH backup battery as an option.

Starting in AX-3.6.44, NiagaraAX support for SRAM and backup battery changed, to allow the usage of both backup methods. Now, any SRAM-equipped JACE controller can also have a backup battery, and be configured to use either SRAM or backup battery, or both. By default, its station's PlatformServices contains both the PowerMonitorService and the DataRecoveryService.

For details, refer to the Engineering Notes II document “JACE Data Recovery Service (SRAM support)”.