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Component identification 24
LED ID Color Name Comments
1
Green CR502: Expander Heartbeat This LED flashes every two seconds during normal
operation. If the LED glows steadily, the expander
cannot function due to an internal problem. If the
LED flashes twice per second, the expander cannot
function because the NVRAM is corrupt.
2
Amber CR510: System Error The controller ASIC has locked up and cannot
process any commands.
3
Amber CR509: Diagnostics Error One of the server diagnostics utilities has detected
a controller error.
4
Amber CR500: Drive Failure To determine which drive has failed, check the Fault
LED of each physical drive connected to the
controller.
5
Green CR508: Activity Port 4I is active.
6
Green CR507: Activity Port 3I is active.
7
Green CR506: Command Outstanding The controller is working on a command from the
host driver.
8
Green CR505: Controller Heartbeat When the controller is in good health, this LED
flashes every two seconds.
9
Green
CR504: Gas Pedal
This LED, together with the Idle Task LED (next item),
indicates the amount of controller CPU activity. For
more information, see the following table.
10
Green CR503: Idle Task This LED, together with the Gas Pedal LED (previous
item), indicates the amount of controller CPU
activity. For more information, see the following
table.
Gas pedal LED status Idle task LED status Controller CPU activity level
Off
Flashing
0–25%
Flashing
Off 25–50%
On steadily
Off 50–75%
On steadily
On steadily 75–100%