No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>Search

Reminder

To have a better experience, please upgrade your IE browser.

upgrade

Abnormal Fan Speeds After FMs Are Removed from and then Installed on an RH8100 V3 Server in the Standby State

Publication Date:  2019-04-16 Views:  26 Downloads:  0
Issue Description

A customer reported that the fan noise of the RH8100 V3 server was loud while the health status indicator of the device was normal.

Handling Process

Collect BMC logs. No BMC hardware alarm was reported.

Check the sensor information, which shows that fan modules 1, 2, and 3 run much faster than fan modules 4, 5, 6, 7, and 8. The speeds of fan modules 1, 2, and 3 are adjusted depending on the temperature of the air intake vent of the FMs. However, the temperature is 18 °C, below the threshold.

Check the operation logs, which show that the FMs (compute modules, memory boards, and FIO modules) are removed and then installed in the standby state after the server is manually powered off. The RH8100 V3 server does not allow the FMs to be removed and installed in the standby state. As a result, the fan speeds are abnormal.


Root Cause

The FMs (compute modules, memory boards, and FIO modules) are removed and then installed when the server is in the standby state. As a result, the fan speeds are abnormal.

Solution

Power off the server and disconnect the power cables. After the indicators on the front panel are off, connect the power cables. Then the BMC will adjust the fan speeds based on the environment temperature and hardware status.

Suggestions

Do not hot swap servers or components that do not support hot swap.

END