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Note
The
disk beacon
command causes the LED that signals normal operation to flash on
the target disk. Enter
Ctrl-C
to stop the flash. You can also use the
enclosure
beacon
command to check the LED to blink on every disk.
Figure 2 Front panel LEDs
1. Disk enclosure fault light
2. Disk enclosure power light
3. Disk active light
4. Disk fault light
Table 3 Status lights visible from front of disk enclosure
Light
Quantity
Color
Meaning
Disk enclosure
fault light
1
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.
Disk enclosure
power light
1
Blue
Power to enclosure is on.
Disk active light 1 per disk
module
Green
No LED when the slot is empty or has a filler
module. Also, off when the disk is powered
down by command; for example, the result of
a temperature fault.
Fast blinking when the SATA/SAS drive is
powered up but not spinning; this is a normal
part of the spin-up sequence, occurring
during the spin-up delays of a slot.
On when the drive has power but is not
handing any I/O activity (the ready state.
Slow blinking when the drive is spinning and
handling I/O activity.
Shelf Installation Overview
12
Data Domain ES30 Expansion Shelf and FS15 SSD Shelf
Hardware Guide