StatusLED
• Blue LED changes state when an ID command is received
• Off indicates expander power is off
Expander A ID
• Solid green indicates the expander is running and system
status is healthy
• Blinking amber indicates a degraded state, such as a fan
failure or PSU failure
• Solid amber indicates the system is over temperature
• Off indicates power is off
Expander health status
• Blue LED changes state when an ID command is received
• Off indicates expander power is off
Expander B ID
• Solid green indicates the shelf is powered on
• Amber indicates the shelf is powered off
Expander power status
Drive LEDs
The following shows the drive and LED indicator lights and describes their functions.
21 Drive faultDrive operation
Each drive carrier has two LEDs. The following table describes the LEDs.
Table 8: Drive LEDs
StatusLED
• Amber indicates that the drive has failed or been removed
• LED off indicates normal drive operation
Drive fault (bottom left)
• Solid green indicates that the drive is online and ready
• Blinking green twice per second indicates that the drive is being initialized
• Blinking green five times per second indicates read/write activity on the drive
Drive operation (top left)
Expansion Shelf Components 64
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