APC 15000 RAID User Manual

Drive Enclosure Troubleshooting

007-5510-002

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When the Audible Alarm sounds, use the appropriate SES CLI command. 

The Audible Alarm sounds anytime the top cover is open. The alarm mutes automatically once the cover 
is closed.

The Audible Alarm can be set through  SES communication. When set in this manner, the alarm remains 
on until any one of the following conditions is met:

• Enclosure is power cycled.
• Alarm is turned off through SES command.

The following sections describe common problems (and possible solutions) you might encounter with 
your drive enclosure system.

The drive enclosure uses extensive thermal monitoring and takes a number of actions to ensure 
component temperatures are kept low and also to minimize acoustic noise. Air flow is from the front, 
over the drive section, through the midplane, through the I/O modules to rear of the enclosure.

AMBER

Enclosure cover 
is open

OFF-both cover pieces securely 
closed and latched in place.
ON-either of the cover pieces is 
NOT securely closed and 
latched in place

AMBER

DEM fault

OFF-all DEMs operating 
correctly.
ON-at least one DEM has failed; 
service action required

AMBER

Drive fault

ON-one or more HDDs are 
faulted. SES must determine 
exact HDD.
OFF-no detectable drive faults

 Display Panel LEDs