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AEC-4412B/7412B User’s Guide
AEC-4412B/7412B User’s Guide
Stock Number: 511640-00 Rev B
Page: 3-28
Print Spec Number: 497358-00
Current Date: 3/19/98
ECN Date: 3/20/98
LED Status Lights
The following table describes the meaning of the LED status lights
located on the front panel of the canister:
WARNING:
If you turn the controller OFF and the LED status
light continues to flash on and off, it means the battery is
backing up the data cache memory which contains valid
data that has not been written to the array(s). When this
occurs, you must turn the system on with the array(s)
attached to allow the valid data to flush to the disks. Failure
to do so will result in loss of data. A fully charged battery
can provide a minimum of 72 hours backup time.
LED
Label
Description
Color
Function
Fault
Controller fault
Red
Solid ON when controller is powered-up
and fails any internal diagnostic, detects
a critical error, or detects a down array
STATUS
Controller Status
Yellow
Solid ON when controller is powered-up
and passes all internal diagnostics
Yellow
Flashing when controller either
— detects a warning/degraded mode
— assumes failover responsibility, or
— fails to boot
HOST
Host SCSI activity
Green
SCSI
— Solid ON when bus is active or
busy
Fibre Channel
— Solid ON when FC loop is con-
nected
— Solid OFF when FC loop is discon-
nected
CH 0
Disk channel 0 activity
Green
Solid ON when bus is active or busy
CH 1
Disk channel 1 activity
Green
Solid ON when bus is active or busy
CH 2
Disk channel 2 activity
Green
Solid ON when bus is active or busy
(future option)
