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Component identification 14
• Cache module installed on a storage controller
• Cache module installed on the system board
1 - Amber 2 - Green 3 - Green Interpretation
Off
Off Off The cache module is not powered.
Off
Flashing 0.5 Hz
Flashing 0.5 Hz
The cache microcontroller is executing from within its
boot loader and receiving new flash code from the host
controller.
Off
Flashing 1 Hz Flashing 1 Hz The cache module is powering up, and the capacitor
pack is charging.
Off
Off Flashing 1 Hz The cache module is idle, and the capacitor pack is
charging.
Off
Off On The cache module is idle, and the capacitor pack is
charged.
Off
On On The cache module is idle, the capacitor pack is charged,
and the cache contains data that has not yet been
written to the drives.
Off
Flashing 1 Hz Off A backup is in progress.
Off
On Off The current backup is complete with no errors.
Flashing 1 Hz
Flashing 1 Hz
Off
The current backup failed, and data has been lost.
Flashing 1 Hz
Flashing 1 Hz On A power error occurred during the previous or current
boot. Data might be corrupt.
Flashing 1 Hz
On Off An overtemperature condition exists.