User's Manual

EMU temperat
ure warning and shutdown operation
The EMU uses multiple temperature sensors to monitor enclosure conditions. A sensor is located in:
• Each power supply
• Each disk dr
ive
• 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 temp
erature 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
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