John Y. Arrasjid (S1) is a Principal Architect at VMware, specializing in cloud computing, virtualization, business continuity, and disaster recovery. John has written Cloud Computing with VMware vCloud Director, Foundation for Cloud Computing with VMware vSphere 4, and Deploying the VMware Infrastructure, all published by the USENIX Association, where he is currently a Board of Directors member at large. John regularly presents at VMworld, VMware Partner Exchange, and USENIX conferences. He is a VMware Certified Professional (VCP) and one of the first VMware Certified Design Experts (VCDX 001). John holds a Bachelor of Science in Computer Science from SUNY at Buffalo, NY. He can be followed on Twitter at https://twitter.com/vcdx001.

David Beazley (F2) is the author of the Python Essential Reference and has been an active member of the Python community since 1996. He is most widely known for creating several Python-related open-source packages, including SWIG (a tool for building C/C++ extension modules to Python) and PLY (a Python version of the lex/yacc parsing tools). In the 1990s, while working at Los Alamos National Laboratory, he helped pioneer the use of Python on massively parallel supercomputers. From 1998 to 2005, he was an assistant professor at the University of Chicago, where he taught courses on operating systems, networks, and compilers. Dave is currently the owner of Dabeaz LLC, a company specializing in Python software development and training courses.

David N. Blank-Edelman (R2) is the Director of Technology at the Northeastern University College of Computer and Information Science and the author of the O'Reilly book Automating System Administration with Perl (the second edition of the Otter book), available at purveyors of fine dead trees everywhere. He has spent the past 25+ years as a system/network administrator in large multi-platform environments, including Brandeis University, Cambridge Technology Group, and the MIT Media Laboratory. He was the program chair of LISA '05 and was one of the LISA '06 Invited Talks co-chairs. David is honored to have been the recipient of the 2009 SAGE Outstanding Achievement Award and to serve on the USENIX Board of Directors.

Mark Burgess (M1, T7) is the founder, chairman, CTO, and principal author of CFEngine. In 2011 he resigned as Professor of Network and System Administration at Oslo University College, where for twenty years he led the way in theory and practice of automation and policy-based management. In the 1990s he underlined the importance of idempotent, autonomous desired state management ("convergence") and formalized cooperative systems in the 2000s ("promise theory"). He is the author of numerous books and papers on network and system administration, including the USENIX Short Topics books A System Engineer's Guide to Host Configuration and Maintenance Using Cfengine, co-authored with Æleen Frisch, and A Sysadmin's Guide to Navigating the Business World, co-authored with Carolyn Rowland. He has won several prizes for his work.

Carlos Camacho (M11) is a Senior Member of Technical Staff in the Networking and Security Solutions group at VMware. His current focus is on the implementation, design, and testing of various networking and security technologies to develop innovative virtualization solutions for customers. He has been in the IT and telecommunications industry for over thirteen years and has held various operational roles. Carlos is also the point of contact for providing engineering-level escalation support for VMware vShield products.

Gerald Carter (T5, T11) is currently serving as CTO for Likewise Software and has been responsible for the company's platform strategy and architecture. He is also heavily involved in Likewise's open source initiative to simplify integration into Microsoft-dominated networks for both network administrators and application developers. He has been developing, writing about, and teaching on Open Source since the late 1990s at events such as LISA, LinuxWorld Expo, SANE, SambaXP, OSCON, and the SNIA SDC. He was a member of the Samba core development team from 1998 to 2009 and wrote both LDAP System Administration and the third edition of Using Samba for O'Reilly Publishing. He has held previous positions at HP and VA Linux Systems and has served on the USENIX Association's Board of Directors.

Mike Ciavarella (T2, T8) has been producing and editing technical documentation since he naively agreed to write application manuals for his first employer in the early 1980s. His first UNIX system administration role was on a network of Sun workstations in 1991, where he built his first firewall. Since that time, Mike has made a point of actively promoting documentation and security as fundamental aspects of system administration. He has been a technical editor for Macmillan Press, has lectured on software engineering at the University of Melbourne (his alma mater), and has provided expert testimony in a number of computer security cases.

Alan Clegg (S2, S7) has over 20 years' experience providing support for and management of Internet-facing systems. As a Dale Carnegie–trained public speaker, Alan has provided tailored learning experiences to corporations and at conventions and meetings (BSDcon, InfraGard, HTCIA) around the globe. Since joining the Internet Systems Consortium staff in 2007, Alan has been creating and providing workshops and training for ISC customers and users. The training sessions include a 5-day DNS and BIND class, a 3-day DNSSEC workshop, and a 2-day ISC DHCP course.

Matt Disney (T6) is the team lead for cybersecurity administration at the National Center for Computational Sciences, Oak Ridge National Laboratory. He approaches security with the background of a system administrator and specializes in deployment automation, configuration management, workflow processes, and intrusion detection. Matt holds an MS in Network and System Administration from the University of Oslo and serves on the LOPSA Board of Directors.

Rudi van Drunen (S3, S8) studied electronic engineering and met the UNIX OS and friends about 25 years ago on a DEC VAX at the University of Groningen (NL). Apparently the two got along pretty well, as nowadays he is employed as CTO and senior UNIX infrastructure consultant at Competa IT in the Netherlands. Before that, he was head of IT for a medical lab, where he did UNIX system administration and applied research in image analysis and neural networks. He is one of the tech gurus and a founding board member of Wireless Leiden, the leading wireless community in the Netherlands. Rudi has his own small open source and hardware design company, Xlexit. He has taught a number of classes and given invited talks on wireless and other topics at events such as LISA and SANE and for the Dutch UNIX community.

Richard Elling (T10, W2) has been designing and building dependable, networked computer systems to solve complex problems for more than 25 years. He was an early adopter of ZFS and has developed benchmarks and analysis techniques for evaluation of data protection schemes and performability of systems. He wrote Designing Enterprise Solutions with Sun Cluster 3.0 (Prentice Hall, 2002) and has authored many white papers, Sun BluePrints, and refereed papers on dependable systems and performability. He is a regular contributor to the ZFS community and is currently the Director of Solution Engineering for Nexenta Systems.

Jacob Farmer (T3, T9) is an industry-recognized expert on storage networking and data protection technologies. He has authored numerous papers and is a regular speaker at major industry events such as Storage Networking World, VMworld, Interop, and the USENIX conferences. Jacob's no-nonsense, fast-paced presentation style has won him many accolades. Most recently Jacob was honored as the top-rated speaker at Storage Networking World, the preeminent conference for the data storage industry. Jacob is a regular lecturer at many of the nation's leading colleges and universities. Recently he has given invited talks at institutions such as Brown, Columbia, Cornell, Carnegie Mellon, Duke, Harvard, and Yale. Inside the data storage industry, Jacob is best known for having authored best practices for designing and optimizing enterprise backup systems and for his expertise in the marketplace for emerging storage networking technologies. He has served on the advisory boards of many of the most successful storage technology startups. Jacob is a graduate of Yale. Follow him on Twitter @JacobAFarmer.

Rik Farrow (M2, T1 ) began working with UNIX system security in 1984 and with TCP/IP networks in 1988. He taught his first security class in 1987 and started teaching internationally the following year. He has been a consultant since 1980 and has advised both firewall and intrusion detection companies in the design of their products. Rik has published two books, one on UNIX security and the other on system administration. He designed a five-day, hands-on class in Internet security for internal use by the Department of Defense. He wrote the "Network Defense" column for Network magazine for over six years and is currently the editor of ;login:, the USENIX magazine. Rik lives with his wife in the high desert of Northern Arizona, where he continues to work and research and still ventures out to teach.

Jason Faulkner (T4), a network engineer for the email and applications division of Rackspace, is responsible for maintaining Linux firewalls and load balancers for millions of business email users. He is a current member of LOPSA and an active contributor to the keepalived project.

Æleen Frisch (R1) has been working as a system administrator for over 20 years. She currently looks after a pathologically heterogeneous network of UNIX and Windows systems. She is the author of several books, including Essential System Administration (now in its 3rd edition from O'Reilly) and the USENIX Short Topics book A System Engineer's Guide to Host Configuration and Maintenance Using Cfengine, co-authored with Mark Burgess. Æleen was the program committee chair for LISA '03 and is a frequent presenter at USENIX events, as well as presenting classes for universities and corporations worldwide.

Shumon Huque (T13) is the Director of Engineering, Research, and Development for the University of Pennsylvania's Networking and Telecommunications division and also serves as the Lead Engineer for the MAGPI GigaPoP. He is involved in network engineering, systems engineering, and the design and operation of key infrastructure services at the University of Pennsylvania (DNS, DHCP, authentication, email, Web, VoIP, Directory, etc.). He holds Bachelors' and Master's degrees in Computer Science from Penn. In addition to his day job, Shumon teaches a lab course on advanced network protocols in Penn's engineering school. Shumon is the principal IPv6 architect at Penn and has been running production IPv6 networks and services for almost a decade. His Web site is https://www.huque.com/~shuque/.

Joshua Jensen (R3) was until recently Cisco Systems' Lead Linux IT Engineer, but is now a one-man IT shop for an autonomous project within Cisco focused on world domination. He has worked as an IBM consultant and was Red Hat's first instructor, examiner, and RHCE. Working with Linux for the past fifteen years and for Red Hat for four and a half years, he wrote and maintained large parts of the Red Hat curriculum: Networking Services and Security, System Administration, Apache and Secure Web Server Administration, and the Red Hat Certified Engineer course and exam.

William LeFebvre (W1) is an author, programmer, instructor, and system administration expert. He has been using UNIX and Internet technologies since 1983. First exposed to computer networking with the original ARPANet, he has stood on the leading edge of every new technology: the World Wide Web, Java, Ruby on Rails, cloud computing, blogs, and social networking. William is currently the Vice President of Technology and a partner in the consulting firm Digital Valence. He provides consultation and advice on the effective use of Internet technology and helps clients establish development and production environments in public clouds. For over four years William was a Technology Fellow at Turner Broadcasting, where he designed systems for high-volume Web sites, including CNN.com, Money.com, SI.com, NASCAR.com, and CartoonNetwork. During that time he led planning and deployment of Web server infrastructure for two general elections and other high-traffic events. In the late 1990s William ran his own consulting business, helping companies with UNIX systems and Internet technologies and teaching Cisco classes as a certified Instructor. He received his bachelor's degree in 1983 and a Master of Science degree in 1988, both from Rice University. His monthly column "Daemons & Dragons" appeared in UNIX Review's Performance Computing, and he served as editor of the USENIX series on Short Topics in System Administration for several years. He has given tutorials for technical conferences held by USENIX, Sun Expo, UK Unix Users Group, and IT Forum, and he was the program chair of LISA '06. LeFebvre is currently on the leadership committee for LOPSA and on the LISA Steering Committee.

Thomas A. Limoncelli (S6, S11, M7) is an internationally recognized author, speaker, and system administrator. His best-known books include Time Management for System Administrators (O'Reilly) and The Practice of System and Network Administration (Addison-Wesley). He received the SAGE 2005 Outstanding Achievement Award. He works at Google in NYC and blogs at https://EverythingSysadmin.com/. He also happens to be co-chair of LISA '11.

Ben Lin (S1) is a Senior Consultant in the VMware Cloud Services group. He has been closely involved with VMware vCloud Service solutions from the start. Ben is a co-author of the USENIX Short Topics book Cloud Computing with VMware vCloud Director. Ben has been with VMware for four years. He has been a developer and active participant in VMworld sessions and labs and has taught classes at LISA. He is a VMware Certified Professional (VCP) and a VMware Certified Design Expert (VCDX).

Nan Liu (F3) is a professional service engineer at Puppet Labs. He travels globally to train users on Puppet and provide implementation and architectural consulting for some of the top IT companies in the world that deploy Puppet to manage their infrastructures.

James Mauro (W4) is a Principal Software Engineer for Oracle Corporation, where he works in the Systems group that Oracle acquired as part of their acquisition of Sun Microsystems in February 2010. Prior to that acquisition, Jim worked for Sun Microsystems for eighteen years. Jim focuses on systems performance, working closely with many of Oracle's customers on real performance issues, as well as internal performance-related engineering projects. Jim's interests include performance tools, all aspects of improving our ability to measure latency, scalable threaded programming, and all aspects of what operating systems do. Jim co-authored Solaris Internals and Solaris Performance and Tools. He is currently co-authoring a book on DTrace.

Adam Moskowitz (M3) is the son of two public school teachers and has been teaching since 1977. He started with swimming and first aid classes for the American Red Cross, then as a Teaching Fellow at the Harvard University Extension Program, then full-time for six years with Instruction Set, teaching classes in C and UNIX programming and UNIX system administration as well as "train the trainer" for those same classes. He has given tutorials at LISA and presented several talks at LISA and other conferences. As part of his job he has made presentations to his peers, his manager, and his manager's peers, to the entire executive management team, and to the whole company.

David Nalley (S9, M6, M12) has been a system administrator for ten years and acted as a consultant for an additional three years. Currently employed as the community manager for the open source CloudStack project, David also contributes to a number of free software projects, including the Fedora Project and the Sugar Labs 4th grade math project. In the Fedora Project David maintains a few dozen software packages, is a sponsor for new packagers in Fedora, and serves on the Fedora Project Board. David is a frequent author for development, sysadmin, and Linux magazines and is frequently found speaking at IT and F/LOSS conferences.

Tobias Oetiker (S5, S10, M5, M10) is an electrical engineer by education and a system administrator and software developer by vocation. These days he writes most of his code in Perl and JavaScript. For over a decade he has been working for the Swiss Federal Institute of Technology in Zurich, providing students and staff with a deluxe UNIX workstation environment. In 2006 he started his own company, OETIKER+PARTNER AG, running UNIX servers for industry customers, applying his pet open source projects MRTG, RRDtool, SmokePing, RemOcular, Extopus, and DbToria to customer problems. In 2006 Tobias received the prestigious SAGE Outstanding Achievement Award for his work on MRTG and RRDtool. Find out more about Tobi at https://tobi.oetiker.ch.

Mahesh Rajani (M11) is a Consulting Architect in the CoE group at VMware. He has been in the IT industry for over fifteen years, serving in various roles from developer through system administrator to cloud architect. He has a Master's degree in Electrical Engineering from Texas A&M. He is also a VMware Certified Design Expert (VCDX-4).

Alan Robertson (W3) founded the High-Availability Linux (Linux-HA) project in 1998 and has been project leader for it ever since. He worked for SuSE for a year, then joined IBM's Linux Technology Center in March 2001, where he works on Linux-HA full-time. Before joining SuSE, he was a Distinguished Member of Technical Staff at Bell Labs, working there twenty-one years in a variety of roles, including providing leading-edge computing support, writing software tools, and developing voicemail systems. Alan is a frequent speaker at a variety of international open source and Linux conferences.

Carolyn Rowland (T7) began her UNIX system administration career in 1991. She currently leads a team of sysadmins at the National Institute of Standards and Technology (NIST). She focuses on raising the visibility of IT by aligning technology with business needs. She finds strength in service delivery, standardization, automation and cost control. Her tireless efforts succeeded in changing the perception of her team from yet another overhead cost to a highly respected part of the organization. Her team has distinguished itself as a leader in the development of new technology solutions that solve business and research problems across the NIST campus.

John Sellens (S4, M4, M9) has been involved in system and network administration since 1986 and is the author of several related USENIX papers, a number of ;login: articles, and the USENIX Short Topics book System and Network Administration for Higher Reliability. He holds an M.Math. in computer science from the University of Waterloo and is a Chartered Accountant. He is the proprietor of SYONEX, a systems and networks consultancy, and is currently a member of the systems team at Magna International. From 1999 to 2004, he was the General Manager for Certainty Solutions in Toronto. Prior to joining Certainty, John was the Director of Network Engineering at UUNET Canada and was a staff member in computing and information technology at the University of Waterloo for eleven years.

Marc Staveley (W1) is now an independent consultant, applying his years of experience with UNIX development and administration to help clients with server consolidation and application migration projects. Previously Marc held positions at SOMA Networks, Sun Microsystems, NCR, and Princeton University. He is a frequent speaker on standards-based development, multi-threaded programming, system administration, and performance tuning.

Theodore Ts'o (T12, F1) has been a Linux kernel developer since almost the very beginnings of Linux: he implemented POSIX job control in the 0.10 Linux kernel. He is the maintainer and author of the Linux COM serial port driver and the Comtrol Rocketport driver, and he architected and implemented Linux's tty layer. Outside of the kernel, he is the maintainer of the e2fsck filesystem consistency checker. Ted is currently employed by Google.