Chapter 5. System monitoring
Understanding the controller LEDs and displays
You can monitor the state of the hardware by using the LEDs and displays on the hardware and the Recovery
Guru in System Manager. You can track events related to the operation of your storage array through the
event log.
You can find LEDs on the following components:
• DE2000/DE4000/DE6000 controllers (2U)
• Operator display panel
• I/O modules (IOMs)
• Drives
• Power-fan canisters
In addition to LEDs, each controller has a seven-segment display, which indicates the operational status of
the controller.
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