Original: RAID is an acronym first defined by David A. Patterson , Garth A. Gibson and Randy Katz at the University of California , Berkeley in 1987 to describe a redundant array of inexpensive disks , David A. Patterson , Garth Gibson , and Randy H. Katz : A Case for Redundant Arrays of Inexpensive Disks ( RAID ) .
Simplified: In 1988 , the different types of RAID ( 1 to 5 ) , were written about by David Patterson , Garth Gibson and Randy Katz in their article , called '' A Case for Redundant Arrays of Inexpensive Disks ( RAID ) '' .