Hello,
I hope you are doing well.
For fan noise so many reasons. HPE recommends using the only supported hardware with the product.
Follow the below DL180 Gen9 quick space for supported components.
https://h20195.www2.hpe.com/v2/getdocument.aspx?docname=c04375610
If the server updated with the latest bios and firmware, follow the below customer advisory.
Advisory: (Revision) HPE ProLiant DL180 Gen9 Server - High Fan Noise May Occur on Some ProLiant DL180 Gen9 Servers
https://support.hpe.com/hpesc/public/docDisplay?cc=us&docId=emr_na-c04683594&lang=en-us
Latest Bios:2.76
Latest iLO4 firmware:2.73
Supported SA controller firmware as below (7.0)
* RECOMMENDED * Supplemental Update / Online ROM Flash Component for Linux (x64) - Smart Array H240ar, H240nr, H240, H241, H244br, P240nr, P244br, P246br, P440ar, P440, P441, P542D, P741m, P840, P840ar, and P841
https://support.hpe.com/hpsc/swd/public/detail?swItemId=MTX_13095de5299a4e97b38dcb58cb
Please contact HPE for further analysis, if the issue still persists after performing the above recommendations.
If you feel this was helpful please click the KUDOS! thumb below!
Regards,