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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.

For 2U models, you can find LEDs on the following components:

  • DE2000/DE4000/DE6000 controllers

  • Operator display panel

  • I/O modules (IOMs)

  • Drives

  • Power-fan canisters

For 4U models, you can find LEDs on the following components:

  • 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.

  • LEDs on the rear of controllers
    The rear of the DE2000/DE4000/DE6000 controller includes LEDs that indicate when the controller is active, when the controller needs attention, when there is Ethernet activity, and so on.
  • LEDs on the operator display panel
    Each controller shelf or drive shelf has LEDs located on the operator display panel (ODP). The ODP is visible through the left end cap of a controller shelf or drive shelf.
  • LEDs on the drives
    The drives that are installed in a controller shelf or drive shelf include an Activity LED and an Attention LED.
  • LEDs on the drive drawer
    Each of the five drive drawers in the DE4000H/DE6000H controller shelf or the DE600S drive shelf includes a single Attention/Locate LED for the shelf and 12 Activity LEDs for the drives.
  • LEDs on the IOMs
    In a duplex array, all DE120S, DE240S and DE600S drive shelves have two I/O modules (IOMs).
  • LEDs on the power-fan canister
    The power-fan canister has LEDs and its own power switch and power outlet. Each 12-drive or 24-drive shelf has two of these canisters.
  • LEDs on the power canister
    The power canister has LEDs and its own power switch and power outlet. Each DE4000H/DE6000H controller shelf and DE600S drive shelf contains two power canisters.
  • LEDs on the fan canister
    The fan canister has an Attention LED that is identified by a sideways exclamation point in the middle of the canister. Each 60-drive shelf contains two fan canisters, one on either side of the enclosure.
  • Seven-segment display overview
    The DE2000/DE4000/DE6000 controllers have a two-digit, seven-segment display at the back, which shows the following information.