This is an old revision of the document!
https://public.dhe.ibm.com/systems/support/system_x_pdf/00kc032.pdf
ufi https://www.ibm.com/support/fixcentral/systemx/selectFixes?product=ibm%2Fsystemx%2F7944&fixids=ibm_fw_uefi_d6e157a-1.15_linux_32-64&source=dbluesearch&function=fixId&parent=System%20x3550%20M3
normal server cooling is designed with space in mind
we don't have that issue (as we are not normal) a retrofit is in order. tiny 2U fans go brrr… either a 6pack of 120mm or water coolers
https://oldcomputerhardware.tumblr.com/