Dell PowerVault 745N - Manual (Page 17)

Table 1 -1 describes the indicators on the system front panel.
Connecting External Devices
When connecting external devices to your system, follow these guidelines:
l Most devices must be connected to a specific connector and device drivers must be installed before the device operates properly. (Device drivers are
normally included with your operating system software or with the device itself.) Check the documentation that accompanied the device for specific
installation and configuration instructions.
l Always attach external devices while your system is turned off. Next, turn on any external devices before turning on the system (unless the
documentation for the device specifies otherwise). If the system does not appear to recognize the device, try turning on the system before turning on
the device.
For information about individual connectors, see "I/O Connectors" in your Installation and Troubleshooting Guide. For information about enabling, disabling, and
configuring I/O ports and connectors, see "
Using the System Setup Program ."
Back-Panel Features
Figure 1 -2 shows the back-panel features of the system.
Figure 1-2. Back-Panel Features
LED Indicator Description
Blue/amber system
status indicator
The blue system status indicator lights up during normal system operation. You can also use the systems management software to
cause this indicator to flash to identify a particular system.
The amber system status indicator flashes when the system needs attention due to a possible system problem.
Hard-drive activity
indicator
The green hard-drive activity indicator flashes when the hard drives are in use.
Hard-disk status
indicator
The green hard-drive status indicator lights up when the drive is ready and is functioning normally. The status indicator is off when
the drive is absent and is not configured as part of a RAID or non-RAID volume and cannot be detected by the operating system or
RAID controller.
The green status indicator blinks when a volume of which the drive is a member is rebuilding.
The amber status indicator blinks when a fault occurs with the drive.
NIC1 and NIC2 link
indicators
The indicators for the two integrated network adapters lights if the network adapters are connected to the network.
The indicators flash when data is being transmitted.
Power indicator The green indicator flashes if AC power is available to the system, but the system is not powered on.
The green indicator is on when the system is powered on.
If the system is not connected to AC power, the green indicator is off.