Diagnosing array problems 45

Item ID Color Description

2 Green Auxiliary Power LED. This LED glows steadily when 3.3V

auxiliary voltage is detected. The auxiliary voltage is used

to preserve BBWC data and is available any time that the

system power cords are connected to a power supply.

3 Amber Battery Health LED. To interpret the illumination patterns of

this LED, see the following table.

4 Green BBWC Status LED. To interpret the illumination patterns of

this LED, see the following table.

LED3 pattern LED4 pattern Interpretation

— One blink every

two seconds

The system is powered down, and the cache contains data that has

not yet been written to the drives. Restore system power as soon as

possible to prevent data loss.

Data preservation time is extended any time that 3.3 V auxiliary

power is available, as indicated by LED 2. In the absence of

auxiliary power, battery power alone preserves the data. A fully-

charged battery can normally preserve data for at least two days.

The battery lifetime also depends on the cache module size. For

further information, refer to the controller QuickSpecs on the HP

website (http://www.hp.com

— Double blink,

then pause

The cache microcontroller is waiting for the host controller to

communicate.

— One blink per

second

The battery pack is below the minimum charge level and is being

charged. Features that require a battery (such as write cache,

capacity expansion, stripe size migration, and RAID migration) are

temporarily unavailable until charging is complete. The recharge

process takes between 15 minutes and two hours, depending on the

initial capacity of the battery.

— Steady glow The battery pack is fully charged, and posted write data is stored in

the cache.

— Off The battery pack is fully charged, and there is no posted write data

in the cache.

One blink per

second

One blink per

second

An alternating green and amber blink pattern indicates that the

cache microcontroller is executing from within its boot loader and

receiving new flash code from the host controller.

Steady glow — There is a short circuit across the battery terminals or within the

battery pack. BBWC features are disabled until the battery pack is

replaced. The life expectancy of a battery pack is typically more

than three years.

One blink per

second

— There is an open circuit across the battery terminals or within the

battery pack. BBWC features are disabled until the battery pack is

replaced. The life expectancy of a battery pack is typically more

than three years.

Diagnostic tools

Several diagnostic tools provide feedback about problems with arrays.

1 2 ... 40 41 42 43 44 45 46 47 48 49 50 ... 54 55

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