Darrell Long

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Darrell Don Earl Long
Darrell Long 2017.jpeg
Born (1962-08-05) August 5, 1962 (age 56)
ResidenceSanta Cruz, California
NationalityUnited States
Alma materSan Diego State University (B.S. 1984)
University of California, San Diego (M.S. 1986), (Ph.D. 1988)
Known forComputer Data Storage
  • Mary Long
    (m. 1984; died 2014)
  • Elaine Long (m. 2016)
AwardsIEEE Fellow (2006)
AAAS Fellow (2008)
Scientific career
FieldsComputer Science
Computer Engineering
InstitutionsUniversity of California, Santa Cruz
Université Paris–Dauphine
Conservatoire National des Arts et Métiers
Université Paris–Descartes
Doctoral advisorJehan-François Pâris

Darrell Don Earl Long (born August 5, 1962, San Diego, California) is an American computer scientist and computer engineer, Kumar Malavalli endowed Chair of Storage Systems Research and Distinguished Professor of Engineering at the University of California, Santa Cruz.[2] He is inaugural Editor-in-Chief, IEEE Letters of the Computer Society[3] (LOCS), Editor-in-Chief, emeritus, of the ACM Transactions on Storage [4] (TOS). In 2002, he was the founder of the Conference on File and Storage Technologies (FAST), one of the most prestigious venues in the computer data storage field.


Long attended public schools in El Cajon, California. He did his undergraduate studies at San Diego State University, graduating in 1984, and went on to graduate studies at the University of California, San Diego, earning a Ph.D. in 1988 under the supervision of Jehan-François Pâris.[2][5]

While in graduate school, he served as a lecturer in mathematics at San Diego State University and in computer science at the University of California, San Diego. After earning his Ph.D. he joined the faculty of the University of California, Santa Cruz. At UCSC, he has served as associate dean for research and graduate studies in the Jack Baskin School of Engineering,[6] and he is Director emeritus of the Storage Systems Research Center.[7] In the field of Computer Science, where women are significantly underrepresented, he has been recognized for his success in producing female doctoral graduates in Computer Science.[8]

He has held visiting faculty positions at the Université Paris–Dauphine (Paris IX), the Conservatoire National des Arts et Métiers, the Université Paris–Descartes (Paris V), Sorbonne Université (Pierre et Marie Curie, Paris VI), the University of Technology, Sydney, the Center for Communications Research, the United States Naval Postgraduate School and is Professor ad Honorem de la Universidad Católica del Uruguay.[9] He is an Associate Member of the European Organization for Nuclear Research (CERN).

He served as the Vice Chair and then Chair of the University of California Committee on Research Policy. He has served on the University of California President’s Council on the National Laboratories, and on the Science & Technology, National Security and Intelligence committees for those laboratories. He served for a number of years on the National Research Council's Standing Committee on Technology Insight-Gauge, Evaluate and Review (TIGER) and on the Committee on Defense Intelligence Agency Technology Forecasts and Reviews. He served on the National Research Council's Committee on Science and Technology for Defense Warning. He was a member of the United States Army Laboratory Assessment Group (ALAG) and the United States Army Technology Objectives review panel. He is a member of the Intelligence Science and Technology Experts Group (ISTEG) for the National Academies of Sciences, Engineering and Medicine. He is a member of JASON[10] a group that brings together prominent scientists as consultants for the United States Department of Defense, Intelligence Community, and other agencies of the Executive Branch.


Long's research interests include computer data storage, operating systems, distributed computing, and computer security.[6] He has written highly cited research papers on web caching,[11] distributed file systems,[12] power-aware hard disk management in mobile computing,[13] and low-bandwidth multicast techniques for video on demand,[14] among other topics.

In 1991,[15] Long pioneered the idea of storing metadata separately from data in the Swift file system.[16] This idea became a central design concept in subsequent distributed file and storage systems, such as IBM TotalStorage/SAN (Storage Tank) and Ceph. He is one of the pioneers in data deduplication and has authored many highly cited articles on the topic. [17]

Awards and honors[edit]

Long became an IEEE Fellow in 2006 "for contributions to storage systems architecture and performance".[18] In 2008 he was inducted as a fellow of the American Association for the Advancement of Science.[6]

  • 2018—IBM Faculty Award.
  • 2016—Best Paper Award, "RESAR: Reliable Storage at Exabyte Scale," Symposium on Modeling, Analysis and Simulation of Computer and Telecommunication Systems.
  • 2015—Best Paper Award, "Classifying Data to Reduce Long Term Data Movement in Shingled Write Disks," Conference on Mass Storage Systems and Technologies.
  • 2013—Best Short Paper Award, "A File By Any Other Name: Managing File Names with Metadata," International Systems and Storage Conference.
  • 2012—Certificate of Appreciation for Outstanding Service, National Research Council.
  • 2010—Professor ad Honorem de la Universidad Católica del Uruguay.
  • 2008—Certificate of Appreciation for Outstanding Service, National Research Council.
  • 2005—IBM Research Invention Achievement Award (Third Plateau).
  • 2005—Certificate of Appreciation for Outstanding Service, National Research Council.
  • 2003—IBM Faculty Award.
  • 2002—IBM Research Invention Achievement Award (Second Plateau).
  • 2001—IBM Corporate Accomplishment Award for Adaptive Differential Back-up in the Tivoli Storage Manager.
  • 1997—IBM Research Invention Achievement Award (First Plateau).
  • 1996—IBM Research Invention Achievement Award.
  • 1995—Best Paper Award, "A Longitudinal Study of Internet Host Reliability," Symposium on Reliable Distributed Systems.


  1. ^ Mary Katherine Long Endowed Prize for women in Engineering and Science
  2. ^ a b Faculty profile, UCSC, retrieved 2012-12-15.
  3. ^ https://www.computer.org/web/locs
  4. ^ Transactions on Storage, retrieved 2012-04-07.
  5. ^ Darrell Don Earl Long at the Mathematics Genealogy Project
  6. ^ a b c Three USC professors elected AAAS Fellows, Tim Stephens, UCSC University News, December 17, 2008, retrieved 2012-02-25.
  7. ^ UCSC Storage Systems Research Center faculty, retrieved 2012-12-15.
  8. ^ Female computer science grad students find supportive environment at UC Santa Cruz, retrieved 2016-3-11.
  9. ^ Curriculum Vitae, retrieved 2017-12-16.
  10. ^ JASON Defense Advisory Panel Reports, retrieved 2014-8-6.
  11. ^ Kroeger, T.M.; Long, D.D.E.; Mogul, J.C. (1997), "Exploring the bounds of web latency reduction from caching and prefetching", Proc. USENIX Symp. Internet Technologies and Systems (PDF).
  12. ^ Weil, Sage A.; Brandt, Scott A.; Miller, Ethan L.; Long, Darrell D. E.; Maltzahn, Carlos (2006), "Ceph: a scalable, high-performance distributed file system", Proc. 7th USENIX Symp. Operating Systems Design and Implementation (PDF), pp. 307–320.
  13. ^ Helmbold, David P.; Long, Darrell D. E.; Sherrod, Bruce (1996), "A dynamic disk spin-down technique for mobile computing", Proc. 2nd International Conf. Mobile Computing and Networking, pp. 130–142, doi:10.1145/236387.236423, ISBN 978-0897918725.
  14. ^ Paris, J.-F.; Carter, S.W.; Long, D.E. (1998), "A low bandwidth broadcasting protocol for video on demand", Proc. 7th International Conf. Computer Communications and Networks, pp. 690–697, doi:10.1109/ICCCN.1998.998831, ISBN 978-0-8186-9014-3.
  15. ^ Cabrera, Luis-Felipe; Long, Darrell D.E. (1991), "Swift: A Distributed Storage Architecture for Large Objects", Proc. 11th Symposium on Mass Storage Systems (MSS), pp. 123–128, doi:10.1109/MASS.1991.160223, ISBN 978-0-8186-2155-0.
  16. ^ Long, Darrell D.E.; Montague, Bruce; Cabrera, Luis-Felipe (1994), "Swift/RAID: A Distributed RAID System", Computing Systems, pp. 331–359, CiteSeerX
  17. ^ Bhagwat, Deepavali; Eshghi, Kave; D. E. Long, Darrell; Lillibridge, Mark (2009), "Extreme Binning: Scalable, Parallel Deduplication for Chunk-based File Backup", (MASCOTS 2009)
  18. ^ List of IEEE Fellows Archived 2012-03-01 at the Wayback Machine, retrieved 2012-12-15.

External links[edit]