This Article 
 Bibliographic References 
 Add to: 
RAID: A Personal Recollection of How Storage Became a System
October-December 2010 (vol. 32 no. 4)
pp. 82-87
Randy H. Katz, University of California, Berkeley

Randy H. Katz, David Patterson, and Garth Gibson first defined the acronym RAID, or redundant arrays of inexpensive disks, in a 1987 paper. The RAID idea was that it was feasible to achieve significantly higher levels of storage reliability from possibly very large numbers of lower-cost and lower-reliability smaller disk drives, which were then emerging for personal computers. Today, the National Academy includes RAID among the technologies created by federally funded research in universities that have led to multibillion dollar industries, and software implemented RAID is a standard component of modern operating systems. Here, Katz chronicles his experiences and contributions to RAID's early development.

1. D.A. Patterson, G. Gibson, and R.H. Katz, "A Case for Redundant Arrays of Inexpensive Disks (RAID)," tech. report, CS Division, Univ. of California Berkley, 1987.
2. D.J. DeWitt et al., "Implementation Techniques for Main Memory Databases," Proc. ACM Sigmod Int'l Conf. Management of Data, ACM Press, 1984, pp. 1–8.
3. M.D. Hill et al., "Design Decisions in SPUR: A VLSI Multiprocessor Workstation," Computer, vol. 19, no. 11, 1986, pp. 8–22.
4. N.K. Ouchi, "System for Recovering Data Stored in Failed Memory Unit," US patent 4092732, to IBM, Patent and Trademark Office, May 1978.
5. B.E. Clark et al., "Parity Spreading to Enhance Storage Access," US patent 4761785, to IBM, Patent and Trademark Office, Aug. 1988.
6. M. Rosenblum and J.K. Ousterhout, "The LFS Storage Manager," Proc. 1990 Summer Usenix Conf., Usenix Assoc., 1990, pp. 315–324.
7. "Funding a Revolution: Government Support for Computing Research," 1999; http://www.nap.educatalog.php?record_id=6323 .

Index Terms:
History of computing, RAID, Berkeley, disk technology, redundant arrays, storage
Randy H. Katz, "RAID: A Personal Recollection of How Storage Became a System," IEEE Annals of the History of Computing, vol. 32, no. 4, pp. 82-87, Oct.-Dec. 2010, doi:10.1109/MAHC.2010.66
Usage of this product signifies your acceptance of the Terms of Use.