The hpsa driver in the LTS tree of 4.14 is version 3.4.20-0 and does not load the HP Smart Array P420i on a HP ProLiant DL360 Gen9. The HP Smart Array controller does not load and no hard disk are visible of this controller. I found a solution to the problem, by using the 3.4.20-125 driver from the 4.17 tree and compiling it again the 4.14 tree. This allows you to compile the kernel with the module hpsa and get a fully working kernel and a hpsa module that actually boots up the RAID controller properly and sees all hard disks connected. A working example is available at https://mirror0.powerel.org/pel/7/intelavx/x86_64/base/packages/kernel-4.14.62-1.pel7.x86_64.rpm