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IOM12 module LEDs
The LEDs on the IOM12 module indicate whether the module is functioning normally, whether it is ready for I/
O traffic, and whether there are any problems with the hardware.
The following table describes IOM12 module LEDs associated with the function of the module and the
function of each SAS port on the module.
The IOM12 module is used in DM600S, DM240S, and DM120S disk shelves.
LED icon
LED name
Attention
Port link
LNK
Location
The following illustration is for a IOM12 module:
Power supply LEDs
The LEDs on the power supply indicate whether the power supply is functioning normally or there are
hardware problems.
The following table describes the two LEDs on power supplies used in DM600S, DM240S, and DM120S disk
shelves:
LED icon
LED name
Power
Attention
44
Service Guide for DM120S, DM240S, and DM600S
Description
State
Solid amber
IOM12 module function: An error occurred with the function of the
IOM12 module.
SAS port function: Less than all four SAS lanes established a link
(with either an adapter or another disk shelf).
Check event messages to determine corrective action to take.
Solid green
One or more of the four SAS lanes established a link (with either an
adapter or another disk shelf).
Solid blue
The system administrator activated this LED function to aid in
physically locating the disk shelf with the failed IOM12 module.
Note: The location LED on the operator display panel and both
IOM12 modules illuminate when this LED function is activated.
Location LEDs automatically turn off after 30 minutes.
Description
State
Solid green
The power supply is functioning correctly.
Off
The power supply failed, the AC switch is turned off, the AC power
cord is not properly installed, or electricity is not being properly
supplied to the power supply.
Check event messages to determine corrective action to take.
Solid amber
An error occurred with the function of the power supply.
Check event messages to determine corrective action to take.
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