Troubleshooting A Serial I/O Device

7.Power down all attached USB devices and disconnect them from the system.

8.Reboot the system and, if your keyboard is functioning, enter the System Setup. Verify that all USB ports are enabled on the Integrated Devices screen, in the System Setup options.

If your keyboard is not functioning, you can also use remote access. If the system is not accessible, reset the NVRAM_CLR jumper inside your system and restore the BIOS to the default settings.

9.Reconnect and power on each USB device one at a time.

10.If a device causes the same problem, power down the device, replace the USB cable with a known good cable, and power up the device.

If all troubleshooting fails, see Getting Help.

Troubleshooting A Serial I/O Device

1.Turn off the system and any peripheral devices connected to the serial port.

2.Swap the serial interface cable with a working cable, and turn on the system and the serial device. If the problem is resolved, replace the interface cable with a known good cable.

3.Turn off the system and the serial device, and swap the device with a comparable device.

4.Turn on the system and the serial device.

If the problem persists, see Getting Help.

Troubleshooting A NIC

1.Run the appropriate diagnostic test. See Using System Diagnostics for available diagnostic tests.

2.Reboot the system and check for any system messages pertaining to the NIC controller.

3.Check the appropriate indicator on the NIC connector:

•If the link indicator does not light, check all cable connections.

•If the activity indicator does not light, the network driver files might be damaged or missing. Remove and reinstall the drivers if applicable. See the NIC's documentation.

•If applicable, change the autonegotiation setting.

•Use another connector on the switch or hub.

4.Ensure that the appropriate drivers are installed and the protocols are bound. See the NIC's documentation.

5.Enter the System Setup and confirm that the NIC ports are enabled on the Integrated Devices screen.

6.Ensure that the NICs, hubs, and switches on the network are all set to the same data transmission speed and duplex. See the documentation for each network device.

7.Ensure that all network cables are of the proper type and do not exceed the maximum length.

If all troubleshooting fails, see Getting Help.

Troubleshooting A Wet System

CAUTION: Many repairs may only be done by a certified service technician. You should only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions that came with the product.

1.Turn off the system and attached peripherals, and disconnect the system from the electrical outlet.

2.Open the system.

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R720XD, R720 specifications

The Dell PowerEdge R720 and R720xd are powerful rack servers designed to deliver exceptional performance, reliability, and scalability for a wide range of data center applications. As part of Dell's 12th generation of PowerEdge servers, they come equipped with advanced features and technologies that cater to diverse workloads.

Both models are built on the Intel Xeon processor E5-2600 family, supporting dual-socket configurations. This allows for an impressive maximum memory capacity of up to 768 GB with 32 DIMM slots, enabling efficient handling of memory-intensive applications. The R720 and R720xd are designed with efficiency in mind, allowing organizations to optimize their resource utilization while maintaining high performance.

One of the most noteworthy features of the R720 and R720xd is the flexible storage options. The R720 can accommodate up to 16 2.5-inch drives, while the R720xd extends this capacity to 24 2.5-inch drives or 12 3.5-inch drives, greatly enhancing storage scalability. This flexibility is essential for businesses with growing data needs, allowing them to configure the server according to their specific requirements.

Both servers come with the iDRAC7 (Integrated Dell Remote Access Controller), which provides advanced management capabilities. iDRAC7 enables IT administrators to remotely monitor and control the server, simplifying the management of hardware functions and system updates. The optional Lifecycle Controller further streamlines server deployment and management, offering integrated systems management capabilities.

In terms of networking, the R720 and R720xd support a variety of network interface cards, including 1 GbE and 10 GbE options. This ensures that organizations can select the right networking capabilities for their specific workload and performance requirements.

Power efficiency is another significant characteristic of these servers. Equipped with Dell’s Energy Smart technologies, they can reduce power consumption and operating costs. Features like power capping and efficient fan control help achieve optimal thermal management in the data center.

In summary, the Dell PowerEdge R720 and R720xd are robust and versatile servers that offer exceptional performance for mission-critical applications. With their advanced processor support, memory capacity, flexible storage configurations, and comprehensive management features, they are well-suited for organizations looking to enhance their IT infrastructure.