Cache Status Leds; Cache Status Leds - Adaptec 2400A/3200S/3400S Only - Adaptec 2025ZCR Installation Manual

When the power-up sequence is complete, viewing the LEDs can
help you determine the operating status of the controller. These LED
patterns are also useful for troubleshooting. Refer to
more information on interpreting LED patterns.
LED Function
1 Indicates that controller is working and interrupts are enabled.
During controller activity, this LED flashes four times per
second.
2 Indicates the occurrence of a nonmaskable interrupt (NMI) to
the I/O processor on the controller.
3 Indicates the controller's internal operating system is in its idle
loop.
4 Indicates that the controller's internal operating system is
processing an interrupt.
5 Reserved for future use.
6 Indicates that the cache controller is using Direct Memory
Access (DMA) to perform a data transfer.
7 Indicates the controller is generating parity information for a
RAID 5 array (hardware XOR).
8 Indicates that there is a command on the peripheral bus.
IRQ Indicates the controller activated an interrupt on the host PCI
bus.

Cache Status LEDs

Cache failure information is recorded in the controller error log and
can be viewed using the Event Log window in Storage Manager.
Cache Status LEDs – Adaptec 2400A/3200S/3400S Only
The following LEDs on the Adaptec RAID controller indicate the
status of the onboard cache RAM:
ECCEN (ECC Enable)—Lit (green) when the installed cache
I
module has ECC.
Controller LEDs
Appendix C for
B-3