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.
DE2000/DE4000/DE6000 controllers
Operator display panel
I/O modules (IOMs)
Drives
Power-fan canisters
DE4000H/DE6000H controllers
Operator display panel
I/O modules (IOMs)
Drives
Drive drawer
Fan canisters
Power canisters
In addition to LEDs, each controller has a seven-segment display, which indicates the operational status of the controller.