• “Front operator panel LEDs” on page 477
• “Integrated diagnostics panel” on page 479
• “External diagnostics handset” on page 484
• “Rear system LEDs” on page 490
• “XCC system management port LEDs” on page 491
• “Power supply LEDs” on page 491
• “System-board-assembly LEDs” on page 493
• “LEDs on the firmware and RoT security module” on page 495
Drive LEDs
This topic provides information on drive LEDs.
Each hot-swap drive comes with an activity LED and status LED and the signals are controlled by the
backplanes. Different colors and speeds indicate different activities or status of the drive. The following
illustration shows the LEDs on a hard disk drive or solid-state drive.
Figure 524. Drive LEDs
Drive LED Status Description
1 Drive activity LED (left) Solid green
The drive is powered but not active.
Blinking green The drive is active.
2 Drive status LED (right) Solid yellow
The drive has an error.
Blinking yellow (blinking slowly, about one
flash per second)
The drive is being rebuilt.
Blinking yellow (blinking rapidly, about four
flashes per second)
The drive is being identified.
Front operator panel LEDs
This topic provides information on the front operator panel LEDs.
Depending on the server model, the server comes with the front operator panel without LCD display or front
operator with LCD display (integrated diagnostics panel). For information about the integrated diagnostics
panel with LCD display, see
“Integrated diagnostics panel” on page 479.
The following illustration shows the front operator panel on the media bay. For some server models, the front
operator panel is integrated on the rack latch. See
“Front I/O module” on page 21.
Chapter 8. Problem determination 477
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