Dell PowerEdge R820 Owner's Manual - Page 9

About Your System, Front-Panel Features And Indicators - drivers

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1 About Your System Front-Panel Features And Indicators Figure 1. Front-Panel Features And Indicators-16 Hard Drive System Item Indicator, Button, or Icon Description Connector 1 Power-on indicator, power button The power-on indicator lights when the system power is on. The power button controls the power supply output to the system. NOTE: On ACPI-compliant operating systems, turning off the system using the power button causes the system to perform a graceful shutdown before power to the system is turned off. 2 NMI button 3 System identification button Used to troubleshoot software and device driver errors when running certain operating systems. This button can be pressed using the end of a paper clip. Use this button only if directed to do so by qualified support personnel or by the operating system's documentation. The identification buttons on the front and back panels can be used to locate a particular system within a rack. When one of these buttons is pressed, the LCD panel on the front and the system status indicator on the back flashes blue until one of the buttons is pressed again. Press to toggle the system ID on and off. If the system stops responding during POST, press and hold the system ID button for more than five seconds to enter BIOS progress mode. To reset iDRAC (if not disabled in F2 iDRAC setup) press and hold the button for more than 15 seconds. 9

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1
About Your System
Front-Panel Features And Indicators
Figure 1. Front-Panel Features And Indicators—16 Hard Drive System
Item
Indicator, Button, or
Connector
Icon
Description
1
Power-on indicator, power
button
The power-on indicator lights when the system power is
on. The power button controls the power supply output to
the system.
NOTE:
On ACPI-compliant operating systems, turning
off the system using the power button causes the
system to perform a graceful shutdown before power
to the system is turned off.
2
NMI button
Used to troubleshoot software and device driver errors
when running certain operating systems. This button can
be pressed using the end of a paper clip.
Use this button only if directed to do so by qualified
support personnel or by the operating system's
documentation.
3
System identification button
The identification buttons on the front and back panels
can be used to locate a particular system within a rack.
When one of these buttons is pressed, the LCD panel on
the front and the system status indicator on the back
flashes blue until one of the buttons is pressed again.
Press to toggle the system ID on and off. If the system
stops responding during POST, press and hold the system
ID button for more than five seconds to enter BIOS
progress mode.
To reset iDRAC (if not disabled in F2 iDRAC setup) press
and hold the button for more than 15 seconds.
9