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Battery-backed write cache LED statuses

NOTE: This feature applies only to SCSI models.

Server status

LED status

Battery module status

Server is on and has normal run time

Green = On

Fast charging


Green = Flashing

The microcontroller is waiting for communication from the host controller.


Green = Off

The battery is fully charged.


Amber = On

A short exists in the connection of one or more of the three button cells within the battery module.


Amber = Flashing

An open exists in the circuit between the positive and negative terminals of the battery module.


Amber = Off


Server is off and is in data retention mode

Amber = Flashing every 15 seconds

User data held in the write cache is being backed up.