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 pa...
Mdadm is used in most Linux distributions to manage software raid where the server does not have or use a hardware raid controller This page will show some of the common commands and usages of mdadm. The bellow use RAID1 as an example, but can be modified for any raid level you are using.