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Cache module LEDs
The cache module has three single-color LEDs (one amber and two green). The LEDs are duplicated on
the reverse side of the cache module to facilitate status viewing.
2 GiB cache module
4 GiB cache module
1 - Amber
Off
Off
Off
Off
Off
Off
Off
Off
Flashing once
per second
Flashing once
per second
2 - Green
3 - Green
Off
Off
Flashing once
Flashing once
every 2 seconds
every 2 seconds
Flashing once
Flashing once
per second
per second
Off
Flashing once
per second
Off
On
On
On
Flashing once
Off
per second
On
Off
Flashing once
Off
per second
Flashing once
On
per second
Interpretation
The cache module is not powered.
The cache microcontroller is executing from within its
boot loader and receiving new flash code from the host
controller.
The cache module is powering up, and the battery or
capacitor pack* is charging.
The cache module is idle, and the battery or capacitor
pack is charging.
The cache module is idle, and the battery or capacitor
pack is charged.
The cache module is idle, the battery or capacitor pack
is charged, and the cache contains data that has not
yet been written to the drives.
A backup of the DDR content on the cache module is
in progress.
The current backup is complete with no errors.
The current backup failed, and data has been lost.
A power error occurred during the previous or current
boot. Data may be corrupt.
Component identification 7
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