# Jeff Bonwick

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{{short description|American software engineer}}
thumb|Jeff Bonwick in 2010
'''Jeff Bonwick''' invented and led development of the [ZFS](/source/ZFS) file system,<ref>{{Cite journal| title = A Conversation with Jeff Bonwick and Bill Moore| journal = [ACM Queue](/source/ACM_Queue)| volume = 5| issue = 6| pages = 13–19| publisher = Association for Computing Machinery| date = September–October 2007| doi=10.1145/1317394.1317400| doi-access = free| last1 = Stanik| first1 = John}}</ref> which was used in [Oracle Corporation](/source/Oracle_Corporation)'s ZFS storage products as well as startups including Nexenta, Delphix, [Joyent](/source/Joyent), and Datto, Inc.<ref>{{cite web | url =https://www.youtube.com/watch?v=dcV2PaMTAJ4 | title = The Birth of ZFS | publisher = OpenZFS | access-date = October 21, 2015 }}</ref><ref>{{cite web | url = http://www.eweek.com/c/a/IT-Management/Suns-ZFS-Creator-to-Quit-Oracle-and-Join-Startup-519195 | title = Sun's ZFS Creator to Quit Oracle and Join Startup | publisher = eWeek | access-date = September 29, 2010 }}{{Dead link|date=March 2023 |bot=InternetArchiveBot |fix-attempted=yes }}</ref>  Bonwick is also the inventor of [slab allocation](/source/slab_allocation),<ref>{{cite web |last=Bonwick |first=Jeff |date=June 14, 2005 |title=The story behind the slab allocator |url=https://blogs.oracle.com/bonwick/entry/now_it_can_be_told |publisher=[Oracle](/source/Oracle_Corporation) |archive-url=https://web.archive.org/web/20160304134711/https://blogs.oracle.com/bonwick/entry/now_it_can_be_told |archive-date=March 4, 2016 |access-date=March 27, 2025}}</ref><ref>http://www.techradar.com/news/world-of-tech/10-unsung-heroes-of-modern-technology-483430</ref>  which is used in many operating systems including [MacOS](/source/MacOS) and [Linux](/source/Linux), and the [LZJB](/source/LZJB) compression algorithm.

His roles included [Sun Fellow](/source/Sun_Fellow),<ref>{{cite web|title=Sun Storage Guru Bonwick Named 14th Sun Fellow|url=https://blogs.oracle.com/ontherecord/entry/sun_storage_guru_bonwick_named|website=Oracle|publisher=Oracle Blog|access-date=27 July 2016|archive-date=23 September 2022|archive-url=https://web.archive.org/web/20220923032315/https://blogs.oracle.com/ontherecord/entry/sun_storage_guru_bonwick_named|url-status=dead}}</ref><ref>{{cite news|title=Sun Engineer Jeff Bonwick is New Sun Fellow|url=http://sun.systemnews.com/articles/112/4/news/18273|access-date=27 July 2016|issue=4|publisher=System News, Inc.|date=26 June 2007|volume=112}}</ref> Sun Storage CTO,<ref>{{cite web|last1=Stammers|first1=Tim|title=Q&A: Jeff Bonwick, Sun's Storage CTO and Bill Moore, ZFS co-designer|url=http://www.netdotwork.co.za/regular.aspx?pklregularid=3314|website=Net.Work|publisher=TechNews|access-date=27 July 2016|archive-date=23 September 2022|archive-url=https://web.archive.org/web/20220923032316/http://www.netdotwork.co.za/regular.aspx?pklregularid=3314|url-status=dead}}</ref> and Oracle vice president.<ref>{{cite news | title=And now, page 2 | url=https://blogs.oracle.com/bonwick/entry/and_now_page_2}}</ref>

== History ==
In 2010 Bonwick co-founded a small company called DSSD with [Mike Shapiro](/source/Mike_Shapiro_(programmer)) and Bill Moore, and became chief technical officer.<ref>{{Cite news |title= Meet DSSD, Andy Bechtolsheim's secret chip startup for big data |date= April 4, 2013 |work= Giga Om |author= Stacey Higginbotham |url= http://gigaom.com/2013/04/04/meet-dssd-andy-bechtolsheims-secret-chip-startup-for-big-data/ |archive-url= https://web.archive.org/web/20130406051043/http://gigaom.com/2013/04/04/meet-dssd-andy-bechtolsheims-secret-chip-startup-for-big-data/ |url-status= dead |archive-date= April 6, 2013 |access-date= March 4, 2017 }}</ref>  He co-invented DSSD's system hardware architecture and software. He developed DSSD's whole-system simulator, which enabled the team to explore possible hardware topologies and software algorithms.<ref>{{cite web|last1=Harris|first1=Robin|title=What is DSSD Building?|url=http://storagemojo.com/2013/03/13/what-is-dssd-building/|website=StorageMojo|publisher=TechnoQWAN LLC|access-date=27 July 2016}}</ref> DSSD was acquired by [EMC Corporation](/source/EMC_Corporation) in 2014,<ref>{{Cite news |title= EMC acquires flash storage startup DSSD |author= Sephen Lawson |date= May 5, 2014 |work= Computer World |url= http://www.computerworld.com/article/2489005/data-center/emc-acquires-flash-storage-startup-dssd.html |access-date= March 4, 2017 }}</ref> which then became part of [Dell Technologies](/source/Dell_Technologies) in 2016.
By the end of 2016, Bill Moore had left the company, while Bonwick remained as CTO.<ref>{{Cite news |title= DSSD President quits Dell EMC |author= Chris Mellor  |date= December 9, 2016 |work= The Register |url= https://www.theregister.co.uk/2016/12/09/dssd_president_quits_dell_emc/ |access-date= March 4, 2017 }}</ref> The DSSD product, called D5, was cancelled in March 2017.<ref>{{Cite news |title= Dell kills off standalone DSSD D5, scatters remains into other gear: Blueprints and staff shifted to different projects after EMC spent '$1bn' on tech |author= Chris Mellor  |date= March 2, 2017 |work= The Register |url= https://www.theregister.co.uk/2017/03/02/dell_cans_standalone_dssd/ |access-date= March 4, 2017 }}</ref>

== LZJB ==
Bonwick invented LZJB, a [lossless data compression](/source/lossless_data_compression) algorithm to compress [crash dump](/source/crash_dump)s and data in [ZFS](/source/ZFS). The software is [CDDL](/source/Common_Development_and_Distribution_License) [license licensed](/source/Software). It includes a number of improvements to the [LZRW1](/source/LZRW) algorithm, a member of the [Lempel–Ziv](/source/LZ77_and_LZ78) family of compression algorithms.<ref>{{Cite journal|first1=Y.|last1=Rathore|first2=M.|last2=Ahirwar|first3=R.|last3=Pandey|title=A Brief Study of Data Compression Algorithms|url=https://www.academia.edu/11814232|journal=Journal of Computer Science IJCSIS|year=2013|volume=11|issue=10|pages=90}}</ref> The name LZJB is derived from its parent algorithm and its creator — Lempel Ziv Jeff Bonwick.

==References==
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Adapted from the Wikipedia article [Jeff Bonwick](https://en.wikipedia.org/wiki/Jeff_Bonwick) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Jeff_Bonwick?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.