Here I will describe frequently used by me MegaCLI commands.

 

Controller related info

MegaCli -AdpAllInfo -aALL
MegaCli -CfgDsply -aALL
MegaCli -AdpEventLog -GetEvents -f events.log -aALL

 

Physical drives info

# List all physical disks
MegaCli -pdlist -aall

# Information about phys drive: X 
MegaCli -pdInfo -PhysDrv[?:X] -aALL

# Check the rebuild status of 
# Disk "3"
MegaCli -PDRbld -ShowProg -PhysDrv [?:3] -aALL

 

Virtual Drive info

# Print virtual drive (VD) information
MegaCli -LDInfo -Lall -aALL

 

 

 

References

http://erikimh.com/megacli-cheatsheet/