Power On And Power Off Problems - Lenovo ThinkEdge SE350 V2 User Manual

1. Isolate which network is operating slowly (such as storage, data, and management). You might find it
helpful to use ping tools or operating-system tools such as task manager or resource manager.
2. Check for traffic congestion on the network.
3. Update the NIC device driver, or the storage device controller device driver.
4. Use the traffic-diagnostic tools that are provided by the IO-module manufacturer.
Operating system performance
Complete the following steps until the problem is solved:
1. If you have recently made changes to the node (for example updated device drivers or installed software
applications) remove the changes.
2. Check for any networking issues.
3. Check the operating system logs for performance related errors.
4. Check for events related to high temperatures and power issues as the node might be throttled to help
with cooling. If it is throttled, reduce the workload on the node to help improve performance.
5. Check for events related to disabled DIMMs. If you do not have enough memory for the application
workload, your operating system will have poor performance.
6. Ensure that the workload is not too high for the configuration.

Power on and power off problems

Use this information to resolve issues when powering on or powering off the server.
• "The power button does not work (server does not start)" on page 205
• "Server does not power on" on page 206
The power button does not work (server does not start)
Note: The power button will not function until approximately 1 to 3 minutes after the server has been
connected to power source to allow time for BMC to initialize.
Complete the following steps until the problem is resolved:
1. Make sure that the power button on the server is working correctly:
a. Disconnect the server power cords.
b. Reconnect the server power cords.
c. Reseat the front operator panel cable, and then repeat steps a and b.
• If the server starts, reseat the front operator panel.
• If the problem remains, replace the front operator panel.
2. Make sure that:
• The power cords are correctly connected to the server and to a working electrical outlet.
• The PMB status LED on the rear side of the sever does not indicate a problem.
• The Power button LED is lit on and flashing slowly.
• The push force is enough and with button force response.
3. If the power button LED didn't lit on or flash correctly, reseat all power source, PMB/PIB, and cables in
between; then, check the power button LED again.
4. If you have just installed an optional device, remove it, and restart the server.
.
Chapter 8 Problem determination
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