Dell DAE2-ATA Hardware Reference Manual page 41

Status Lights Visible from the Front of the Disk Enclosure
Table 3-1
Light Quantity
Disk Enclosure Power 1
Disk Enclosure Fault 1
Disk Active 1 per disk module Green
Disk Fault 1 per disk module Amber On when the disk module is faulty, or as an indication to remove
Figure 3-2 shows the enclosure address and loop ID indicators,
visible from the back of the enclosure.
Color Meaning
Green Power to enclosure is on.
Amber On when any fault condition exists; if the fault is not obvious
from a disk module light, look at the back of the disk enclosure.
Off when the slot is empty or contains a filler module.
Also off when the disk is powered down by command; for
example, the result of a temperature fault.
Flashing (mostly off) when the FC drive is powered up but not
spinning; this is a normal part of the spin
occurring during the spin-up delay of a slot.
Flashing (at a constant rate)
FC drive: when the drive is spinning up or spinning down
normally.
ATA drive: when the module has received power but the disk
has not started spinning
On when the drive has power but is not handling any I/O activity
(the ready state). ATA modules also show the Disk Active LED
on while the disk spins up or down normally.
Flashing (mostly on ) when the drive is spinning and handling I/O
activity.
Flashing (constant fast rate) when an ATA LCC has forced
ownership of the drive.
the drive.
-
up sequence,
Monitoring Disk Enclosure Status
Servicing a DAE2
3-3