HP StorageWorks 2500 Disk System - Manual (Page 53)

EMU temperature warning and shutdown operation
The EMU uses multiple temperature sensors to monitor enclosure conditions. A sensor is located in:
• Each power supply
• Each disk drive
• The EMU
An algorithm involving data from multiple sensors determines the temperature in the enclosure. The
following occurs when an unacceptable temperature condition exists:
• As the temperature approches a critical temperature condition, a noncritical alarm sounds to provide
time for corrective action before shutdown occurs.
• If the temperature reaches a critical level, the EMU activates the alarm and starts a timer which
shuts down the enclosure in 7 minutes.
2500 Disk System user guide 53