To Install MegaRAID Storage Manager you will need to download the software from the Broadcom site (it has had many names in the past lsi/avago....)
Before starting make sure your sytem is upto date install all updates as required
apt update && apt upgrade
You will need to install the alien package to convert the rpm's to .deb's that come in the download for the software
sudo apt install alien
Download the MegaRAID Storage Manager (link is for 9440-8i): https://docs.broadcom.com/docs-and-downloads/raid-controllers/raid-controllers-common-files/17.05.00.02_Linux-64_MSM.gz
Extract the downloaded package
sudo tar -xzvf 17.05.00.02_Linux-64_MSM.gz
Convert the packages to .deb
cd 17.05.00.02_Linux-64_MSM/disk/
sudo alien --scripts *.rpm
Install lib-utils2_xxxxxxx and megaraid-xxxxxxxx
sudo dpkg -i lib-utils2_1.00-9_all.deb
sudo dpkg -i megaraid-storage-manager_16.11.00-4_all.deb
reboot
Start the MSM service
sudo systemctl start vivaldiframeworkd.service
Make the service run at startup
sudo systemctl enable vivaldiframeworkd.service
If you have a GUI on your Linux box you can run the GUI tool
cd "/usr/local/MegaRAID Storage Manager"
sudo ./startupui.sh
If you just want to use the CLI then you can use the cli manager in /usr/local/MegaRAID Storage Manager/StorCLI/storcli64
for example
/usr/local/MegaRAID\ Storage\ Manager/StorCLI/storcli64 /c0 show all