I/O module
The I/O module provides the interface between the disk enclosure and the host.
Each I/O module has two ports that can transmit and receive data for bidirectional operation.
I/O module LEDs
LEDs on the I/O module provide status information about each I/O port and the entire module.
NOTE:
The following image illustrates LEDs on the I/O module.
The rear power and UID module includes status LEDs, a 7–segment display for status codes,
and a unit identification (UID) button.
Description
Display
Indicator
Indicates the enclosure number or an error/warning code
3
.
7-segment display
Link at high speed with no activity
1
,
2
. Data
p
ort
s
Link at high speed with activity
Solid b
lue
4. UID
Solid g
reen
,
a
mber off
5. Health
I/O module
15
On
Solid g
reen,
a
mber off
F
lashing
green
,
a
mber off
Solid g
reen,
solid a
mber
Link at low speed with no activity
F
lashing
green
,
solid a
mber
Link at low speed with activity
Green off,
solid a
mber
No link or no cable connected
Off
Normal operation
Location requested. Safe to remove.
Flashing b
lue
Location requested. Do
not remove.
Normal operation
Green off,
solid a
mber
Fault
Green off, flashing
amber
Warning