Drive LEDs
Figure 6 “Drive LEDs” on page 18 illustrates the LEDs on each drive.
Figure 6. Drive LEDs
Table 3. Drive LEDs
Callout Callout
1 Drive activity LED (green) 2 Drive status LED (yellow)
1 Drive activity LED (green):
Each hot-swap drive comes with an activity LED. If the LED is lit, it indicates that the drive is powered, but
not actively reading or writing data. If the LED is flashing, the drive is being accessed.
2 Drive status LED (yellow):
These LEDs are on SAS or SATA hard disk drives and solid-state drives. When one of these LEDs is lit, it
indicates that the drive has failed. When this LED is flashing slowly (one flash per second), it indicates that
the drive is being rebuilt. When the LED is flashing rapidly (three flashes per second), it indicates that the
controller is identifying the drive.
Front operator panel
The following illustration shows the controls and LEDs on the front operator panel.
Table 4. Operator panel front controls and indicators
Callout Callout
1 Power button and power LED
3 System ID button/LED
2 Network activity LED
4 System-error LED
• 1 Power button and power LED: Press this button to turn the server on and off manually. The states of
the power LED are as follows:
Off: Power is not present or the power supply, or the LED itself has failed.
Flashing rapidly (4 times per second): The server is turned off and is not ready to be turned on. The
power button is disabled. This will last approximately 5 to 10 seconds.
Flashing slowly (once per second): The server is turned off and is ready to be turned on. You can
press the power button to turn on the server.
On: The server is turned on.
18
ThinkSystem SR950 Setup Guide
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