Claudio Fleiner IBM Research Division, Almaden Research Center, 650 Harry Road, San Jose, California 95120 (fleiner@us.ibm.com). Dr. Fleiner received a Ph.D. degree in computer science from the University of Fribourg, Switzerland. Prior to joining the IBM Almaden Research Center, he worked at the IBM Zurich Research Laboratory and Transmeta. Dr. Fleiner's research interests include large storage systems, distributed computing, and computer networks.

Robert B. Garner IBM Research Division, Almaden Research Center, 650 Harry Road, San Jose, California 95120 (robgarn@us.ibm.com). Mr. Garner received his M.S.E.E. degree from Stanford University. Before joining the IBM Research Division in 2001 to work in the IceCube project, he worked at Xerox Palo Alto Research Center, Sun Microsystems, and Brocade Communications.

James L. Hafner IBM Research Division, Almaden Research Center, 650 Harry Road, San Jose, California 95120 (hafner@almaden.ibm.com). Dr. Hafner received a Ph.D. degree in mathematics from the University of Illinois. He later joined the IBM Research Division and has worked in diverse areas, including number theory, complexity theory, image databases, and storage-system protocols. Dr. Hafner currently works in the advanced RAID project.

KK Rao IBM Research Division, Almaden Research Center, 650 Harry Road, San Jose, California 95120 (kkrao@us.ibm.com). Mr. Rao is a Distinguished Engineer in storage systems. He received B.S.E.E. and M.S.E.E. degrees from the Indian Institute of Technology, Bombay, joining the IBM Research Division in 2002. Mr. Rao has been working on advanced RAID algorithms, reliability of distributed storage systems, and scale-out storage systems.

Deepak R. Kenchammana-Hosekote IBM Research Division, Almaden Research Center, 650 Harry Road, San Jose, California 95120 (kencham@us.ibm.com). Dr. Kenchammana-Hosekote received a Ph.D. degree in computer science from the University of Minnesota. He has been at the IBM Almaden Research Center since 1997 working on various RAID and distributed storage systems.

Winfried W. Wilcke IBM Research Division, Almaden Research Center, 650 Harry Road, San Jose, California 95120 (winfriedwilcke@us.ibm.com). Dr. Wilcke is a program director at the IBM Almaden Research Center, where he started the Intelligent Bricks project and IceCube implementation in 2001. He was a Senior Manager at the IBM Thomas J. Watson Research Center, responsible for Victor/Vulcan research, later commercialized in IBM SP* supercomputers. As Director of Architecture (later Chief Technical Officer) of HaL computers, he was deeply involved in the creation of the 64-bit SPARC** architecture. Dr. Wilcke received a Ph.D. degree in nuclear physics and previously worked at the University of Rochester and at the Los Alamos and Lawrence Berkeley National Laboratories.

Joseph S. Glider IBM Research Division, Almaden Research Center, 650 Harry Road, San Jose, California 95120 (gliderj@almaden.ibm.com). Mr. Glider is a Senior Technical Staff Member and manager in charge of the Intelligent Bricks Storage Software project at the IBM Almaden Research Center. He received a B.S.E.E. degree from Rensselaer Polytechnic Institute. Mr. Glider's research interests include distributed storage systems and fault-tolerant storage systems.

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**Trademark, service mark, or registered trademark of SPARC International, Inc. in the United States, other countries, or both.