Issue
A power failure at the site causes all CyberStations to shut down, will the CX controllers buffer access events? what happens if the controller resets as a result of power glitch?
Environment
Cyberstation
CX9702
CX9900, CX9940
CX9680
ACX5740, ACX5720
Cause
-Power failure or controller reset due to electrical noise during thunder storm.
Resolution
1.
All controllers will buffer access events when they lose communication with the primary and secondary access server.
2.
If the controller resets as a result of a power loss that exceeds the UPS capacity or due to a glitch or spike in the power line then whether the events will persists or not depends on the controller type.
CX9702, CX9900 and CX9940
Access events in controller buffer will be lost
CX9680, ACX5740 and ACX5720
Internal battery will keep RAM intact for up to 30 days
Controller will warm start after a glitch or spike in the power line and maintain the events in its buffer.
*** NOTE If controller has to cool start (restore its objects from flash memory) then the access events in the buffer WILL BE LOST.
