Solving SAS problems

For any SAS error message, one or more of the following devices might be causing the problem:

vA failing SAS device (adapter, drive, or controller)

vAn incorrect SAS termination jumper setting

vA missing or incorrectly installed SAS terminator

vA defective SAS terminator

vAn incorrectly installed cable

vA defective cable

For any SAS error message, follow these suggested actions in the order in which they are listed until the problem is solved:

1.Make sure that external SAS devices are turned on before you turn on the server.

2.Make sure that the cables for all external SAS devices are connected correctly.

3.If an external SAS device is attached, make sure that the external SAS termination is set to automatic.

4.Make sure that the last device in each SAS chain is terminated correctly.

5.Make sure that the SAS devices are configured correctly.

Solving power problems

Power problems can be difficult to solve. For example, a short circuit can exist anywhere on any of the power distribution buses. Usually, a short circuit will cause the power subsystem to shut down because of an overcurrent condition. To diagnose a power problem, use the following general procedure:

1.Turn off the server and disconnect all ac power cords.

2.Check for loose cables in the power subsystem. Also check for short circuits, for example, if a loose screw is causing a short circuit on a circuit board.

3.Remove the adapters and disconnect the cables and power cords to all internal and external devices until the server is at the minimum configuration that is required for the server to start (see “Solving undetermined problems” on page 245 for the minimum configuration).

4.Reconnect all ac power cords and turn on the server. If the server starts successfully, replace the adapters and devices one at a time until the problem is isolated.

If the server does not start from the minimum configuration, replace the components in the minimum configuration one at a time until the problem is isolated.

Chapter 5. Diagnostics 243

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Lenovo 6434, TS100, 6432, 6431, 6433 manual Solving SAS problems, Solving power problems
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TS100, 6433, 6432, 6431, 6434 specifications

Lenovo is renowned for its innovative and high-performance technology, and the Lenovo 6434, 6431, 6432, 6433, and TS100 models exemplify this reputation with a range of features tailored for various user needs.

The Lenovo 6434 is designed for versatility, targeting both business and casual users. It features a powerful processor that enhances performance, making it ideal for multitasking and demanding applications. The device is equipped with an impressive display, offering vibrant colors and sharp visuals, perfect for presentations and media consumption.

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Lenovo 6433 is crafted with a focus on durability and security. Its chassis is built from reinforced materials that withstand daily wear and tear. Additionally, this model features advanced security features, including a fingerprint reader and a webcam privacy shutter, to protect users' sensitive information.

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Overall, the Lenovo 6434, 6431, 6432, 6433, and TS100 encompass a variety of features and technologies suited for different user groups, establishing Lenovo's commitment to quality and innovation in the computing sphere. Whether for business, gaming, education, or everyday use, these models offer a balance of performance, portability, and security.
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