Understanding RAID

If you are like me, who always forgot all the different configuration of RAID (Redundant array of independent/inexpensive disks), the following illustration should be very useful. It was sent to me at work. Original author unknown.

Standalone Cluster Hot Swap RAID 0
Standalone Cluster Hot Swap RAID 0
RAID 1 RAID 5 RAID 0+1  
RAID 1 RAID 5 RAID 0+1  

Pretty clear isn't it?