If you directly connect two servers (without a hub), or if you are not using a hub with X ports, use a crossover cable. To determine whether a hub has an X port, check the port label. If the label contains an X, the hub has an X port.

v Determine whether the hub supports auto-negotiation. If it does not, try configuring the integrated Ethernet controller manually to match the speed and duplex mode of the hub.

vCheck the Ethernet controller LEDs on the rear panel of the server. These LEDs indicate whether there is a problem with the connector, cable, or hub.

The Ethernet link status LED is lit when the Ethernet controller receives a link pulse from the hub. If the LED is off, there might be a defective connector or cable or a problem with the hub.

The Ethernet transmit/receive activity LED is lit when the Ethernet controller sends or receives data over the Ethernet network. If the Ethernet transmit/receive activity is off, make sure that the hub and network are operating and that the correct device drivers are installed.

vCheck the LAN activity LED on the rear of the server. The LAN activity LED is lit when data is active on the Ethernet network. If the LAN activity LED is off, make sure that the hub and network are operating and that the correct device drivers are installed.

vCheck for operating-system-specific causes of the problem.

vMake sure that the device drivers on the client and server are using the same protocol.

If the Ethernet controller still cannot connect to the network but the hardware appears to be working, the network administrator must investigate other possible causes of the error.

Solving undetermined problems

If the diagnostic tests did not diagnose the failure or if the server is inoperative, use the information in this section.

If you suspect that a software problem is causing failures (continuous or intermittent), see “Software problems” on page 64.

Damaged data in CMOS memory or damaged server firmware can cause undetermined problems. To reset the CMOS data, use the CMOS jumper to clear the CMOS memory and override the power-on password; see “System-board switches and jumpers” on page 111. If you suspect that the server firmware is damaged, see “Recovering the server firmware” on page 100.

If the power supplies are working correctly, complete the following steps:

1.Turn off the server.

2.Make sure that the server is cabled correctly.

3.Remove or disconnect the following devices, one at a time, until you find the failure. Turn on the server and reconfigure it each time.

vAny external devices.

vSurge-suppressor device (on the server).

vPrinter, mouse, and non-Lenovo devices.

vEach adapter.

vHard disk drives.

vMemory modules. The minimum configuration requirement is 1 GB DIMM in slots 3.

4.Turn on the server. If the problem remains, suspect the following components in the following order:

vMemory module

vMicroprocessor

vSystem board

If the problem is solved when you remove an adapter from the server but the problem recurs when you reinstall the same adapter, suspect the adapter; if the problem recurs when you replace the adapter with a different one, suspect the riser card.

If you suspect a networking problem and the server passes all the system tests, suspect a network cabling problem that is external to the server.

Chapter 4. Diagnostics 103

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Lenovo RS210 manual Solving undetermined problems

RS210 specifications

The Lenovo RS210 is an innovative and compact server designed to meet the demands of small to medium-sized businesses and edge computing environments. As part of Lenovo's robust server line, the RS210 delivers enhanced performance, efficiency, and reliability, making it a perfect fit for businesses looking to optimize their IT infrastructure.

One of the standout features of the RS210 is its compact design, which allows it to fit seamlessly into space-constrained environments. With a 1U rack-mountable form factor, the RS210 is ideal for organizations that need to maximize their data center space without sacrificing performance. This small footprint is complemented by Lenovo's intelligent cooling technology, which helps maintain optimal operating temperatures while reducing energy consumption.

The RS210 is powered by the latest Intel Xeon processors, delivering exceptional processing power and providing a scalable solution for growing business needs. With support for both single and dual-processor configurations, it can handle a wide range of workloads, allowing businesses to run applications efficiently. The server also features up to 128GB of DDR4 RAM, ensuring that it can manage multiple simultaneous tasks seamlessly.

Storage capabilities are another strong point for the RS210, as it supports a variety of storage options, including SAS, SATA, and SSD drives. This flexibility enables organizations to configure the server to meet their specific storage requirements while ensuring high-performance access to data. Additionally, the RS210 supports RAID configurations, providing redundancy and data protection, which is crucial for maintaining business continuity.

Networking in the RS210 is fortified by multiple Gigabit Ethernet ports, ensuring robust connectivity options. This feature is vital for organizations that require reliable communication between servers and network devices. For enhanced security, Lenovo has incorporated built-in features such as Trusted Platform Module (TPM) for hardware-based security and secure access options to safeguard sensitive data.

Lenovo's commitment to management and monitoring is evident in the RS210, as it includes the Lenovo XClarity Controller. This integrated management tool simplifies server administration, allowing IT teams to deploy, monitor, and manage the server efficiently, leading to reduced operational costs and increased uptime.

In conclusion, the Lenovo RS210 stands out in the market as a compact, powerful, and versatile server solution designed for a variety of workloads. With its impressive processing power, flexible storage options, and robust management features, it is well-equipped to support the evolving needs of modern businesses, making it a reliable choice for IT professionals looking to invest in a future-proof server infrastructure.