Performance Problems - Lenovo ThinkEdge SE350 V2 User Manual

• "External USB device is not recognized" on page 204
• "A Lenovo optional device that worked previously does not work now" on page 204
• "A Lenovo optional device that was just installed does not work." on page 204
• "A Lenovo optional device that worked previously does not work now" on page 204
External USB device is not recognized
Complete the following steps until the problem is resolved:
1. Update the UEFI firmware to the latest version.
2. Make sure that the proper drivers are installed on the compute node. See the product documentation for
the USB device for information about device drivers.
3. Use the Setup utility to make sure that the device is configured correctly.
4. If the USB device is plugged into a hub or the console breakout cable, unplug the device and plug it
directly into the USB port on the front of the node.
A Lenovo optional device that was just installed does not work.
1. Make sure that:
• The device is supported for the server (see
• You followed the installation instructions that came with the device and the device is installed
correctly.
• You have not loosened any other installed devices or cables.
• You updated the configuration information in system setup. When you start a server and press the
key according to the on-screen instructions to display the Setup Utility. (For more information, see the
"Startup" section in the LXPM documentation compatible with your server at
.) Whenever memory or any other device is changed, you must update the
lxpm-overview/
configuration.
2. Reseat the device that you have just installed.
3. Replace the device that you have just installed.
4. Reseat the cable connection and check there is no physical damage to the cable.
5. If there is any cable damages, then replace the cable.
A Lenovo optional device that worked previously does not work now
1. Make sure that all of the cable connections for the device are secure.
2. If the device comes with test instructions, use those instructions to test the device.
3. Reseat the cable connection and check if any physical parts have been damaged.
4. Replace the cable.
5. Reseat the failing device.
6. Replace the failing device.

Performance problems

Use this information to solve performance problems.
• "Network performance" on page 204
• "Operating system performance" on page 205
Network performance
Complete the following steps until the problem is solved:
ThinkEdge SE350 V2 User Guide
204
https://serverproven.lenovo.com
).
https://pubs.lenovo.com/