1-14 Chapter 1: Product introduction
1.5.2 Audible alarms
The system comes with audible alarms that are triggered when certain active components fail or
when specic controller or system thresholds exceed. Whenever you hear an audible alarm, you must
determine the cause and solve the problem immediately.
Event notication messages indicate the completion or status of array conguration tasks and are
always accompanied by two or three successive and prolonged beeps. You can turn off the alarm using
the mute button on the front panel.
WARNING! Failure to respond when an audible alarm is set off can lead to permanent damage to the
system. When you hear an audible alarm, solve the problem immediately.
1.6 Hot-swappable components
The system also has a number of hot-swappable parts that you can change while the system is still
online without affecting its operational integrity.
These hot-swappable components are user-maintained:
• Controller modules (dual-controller models)
• PSU (including cooling modules)
• Hard drive
IMPORTANT! Only remove these hot-swappable components when replacement is needed.
NOTE: A normal airow ensures sufcient cooling of the system and this can only be attained when
all components are properly installed. Remember to only remove the failed component if there is
already a replacement. For more information on replacing hot-swappable components, see chapter
System maintenance.
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