Inside the tarball or zip file you’ll find an RPM archive which contains the MegaCli and MegaCli64 binaries (will be installed to /opt/MegaRAID/MegaCli).
Please note: This emergency cheat sheet is not exhaustive, but it should be sufficient in most cases. For a complete reference either call MegaCli -h or refer to the manual at: http://www.lsi.com/files/docs/techdocs/storage_stand_prod/sas/mr_sas_sw_ug.pdf
While there are a lot of different parameters for MegaCli, some of them are always identical. These are described here in short.
Adapter parameter -aN The parameter -aN (where N is a number starting with zero or the string ALL) specifies the PERC5/i adapter ID. If you have only one controller it’s safe to use ALL instead of a specific ID, but you’re encouraged to use the ID for everything that makes changes to your RAID configuration.