D3000 Disk Enclosure User Guide (734753-001, March 2014)

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.
Fault conditionsOperating conditionStartup conditionIndicator
OffBlinking or solid green1. Port Link
Solid amberOff2. Port Error
OffA number, representing the
box number, or an
error/warning code.
3. 7–segment display
OffOffBlue4. UID
OffSolid greenBlinking green5. Health
Blinking or solid amberOff6. Fault
I/O module 15