1 Green LED

2 Amber LED

Interpretation

 

 

 

Off

On

A backup is in progress.

Flashing (1 Hz)

On

A restore is in progress.

Flashing (1 Hz)

Off

The capacitor pack is charging.

On

Off

The capacitor pack has completed charging.

Flashing (2 Hz)

Flashing (2 Hz)

One of the following conditions exists:

Alternating with

Alternating with

The charging process has timed out.

amber LED

green LED

The capacitor pack is not connected.

 

 

 

On

On

The flash code image failed to load.

Off

Off

The flash code is corrupt.

FBWC module LEDs (P222, P420, P421, P721m, P822)

The FBWC 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.

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 may be corrupt.

 

 

 

 

Component identification 27