Accusys ExaSAN A08S-PS - Manual (Page 27)

Chapter 6 – Status Indicators
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Beeper Activity
Two types of beeper alerts may occur when the system is powered on:
• Long beeps with one second pauses in-between: the controller is
malfunctioning and the host server can not detect the disks in the RAID
system. See “Controller Maintenance”, page 30.
• Three short beeps: the hard drive, fan module or power supply is
malfunctioning and must be replaced. See “Replacing a Disk”, page 29
and “Power Supply and Fan Module Maintenance”, page 31.