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Controller module LEDs

For details on how to remove and replace a controller module see “Controller module” on page 22. The controller module incorporates the following LED indicators:

LED functions

LED state

Definition

 

 

 

Battery fault

Orange

When lit, this LED indicates that the backup battery unit is missing, has low voltage,

 

 

has experienced a time-out on charge, indicated a faulty battery, or has experienced

 

 

a fault in the charging circuitry.

 

 

 

Cache active

Orange

When lit, this LED indicates that the RAID controller cache has data saved in memory

 

 

but not written to the disk array.

 

 

 

Controller activity on

Orange

When lit, this LED indicates activity on the Bank 0 disk drives.

drive bank 0

 

 

 

 

 

Controller activity on

Orange

When lit, this LED indicates activity on the Bank 1 disk drives.

drive bank 1

 

 

 

 

 

Controller OK

Green

When lit, this LED indicates that RAID controller activity is normal.

 

 

 

Controller fault

Orange

When lit, this LED indicates that a RAID controller fault has occurred.

 

 

 

Ethernet status

Green

When lit, this LED indicates that the Ethernet port has a valid connection.

 

 

 

 

Orange

When lit, this LED indicates that the Ethernet port has activity.

 

 

 

SAS activity*

Green

When lit, these LEDs show I/O activity on the specific port lane indicated.

* These LEDs blink on and off when there is module activity.

Disk I/O module LEDs

LED Functions

Description

 

 

SAS Activity These LEDs are adjacent to the SAS connectors. When lit, they indicate I/O activity on a specific port lane (4 lanes).

Drive carrier LEDs

See “Drive carrier module faults” on page 16.

Audible alarm

The enclosure subsystem includes an audible alarm which indicates when a fault state is present. The following conditions activate the audible alarm:

•Fan fault

•Voltage out of range

•Over temperature

•Thermal overrun

•System fault

•Logical fault

•Power supply module fault

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