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== Summary ==
== Summary ==

Revision as of 16:39, 5 November 2019

Welcome to OpenZFS

OpenZFS brings together developers and users from various open-source forks of the original ZFS on different platforms and we're always looking to grow our community. There are a multitude of ways to contribute to the project and contributors are happy to help newcomers. As we add diverse perspectives, our community becomes richer, and we're committed to creating an environment where all people feel welcome. Information for new contributors is available here.

OpenZFS is an associated project of SPI (Software in the Public Interest). SPI is a 501(c)3 nonprofit organization which handles our donations, finances, and legal holdings. You can donate to OpenZFS using the link below:


OpenZFS was announced in September 2013 as the truly open source successor to the ZFS project. Our community brings together developers from the illumos, FreeBSD, Linux, OS X and Windows platforms, and a wide range of companies that build products on top of OpenZFS.

OpenZFS is an outstanding storage platform that encompasses the functionality of traditional filesystems, volume managers, and more, with consistent reliability, functionality and performance across all distributions:

illumos Webpage GitHub
ZoF – ZFS on FreeBSD Webpage GitHub
ZoL – ZFS on Linux Webpage GitHub
OpenZFS on OS X Webpage GitHub
OpenZFS on Windows Webpage GitHub

OpenZFS Developer Summit 2019 <-- click for more info

The seventh annual conference will be held on Nov 4-5, 2019 in San Francisco, CA.

Register on eventbrite


Title Speaker Company
State of OpenZFS Matt Ahrens Delphix
Metaslab Allocation Performance Paul Dagnelie Delphix
Storage Configurator Steven Umbehocker OSNexus
Capacity Usage Calculator Kody Kantor Joyent
OpenZFS Everywhere Michael Dexter & Jorgen Lundman
Debugging ZFS: State of the Art on Linux Tom Caputi Datto
Debugging ZFS: From Illumos to Linux Serapheim Dimitropoulos Delphix
ZFS TRIM Explained Brian Behlendorf LLNL
Healing With ZFS Receive Alek Pinchuk Axcient
libshare on Linux is Broken George Wilson & Don Brady Delphix
VDEV Properties Allan Jude Klara Systems
A Device by Any Other Name:
Common Pitfalls in Device Naming for ZFS on Linux
Sara Hartse & Don Brady Delphix
Illumos Brings the SAS Kody Kantor Joyent
Optimizing Filesystems for Multi-Actuator HDDs Muhammad Ahmad Seagate

Diamond Sponsors

  • datto
  • Delphix
  • Intel


A Code of Conduct has been implemented for the OpenZFS community.

Matt Ahrens and George Wilson gave a talk on OpenZFS Basics at SCALE16x, March 2018. Slides and Video

The ZFS User Conference was held April 2018. Videos now posted.

Matt Ahrens gave a talk at BSDCAN: Flexible Disk Use in OpenZFS?, June 2018

Sara Hartse gave a talk at BSDCAN: 100x Faster Clone Deletion for ZFS, June 2018

OpenZFS Developer Summit was held September 10-11, 2018.

The first OpenZFS Leadership Meeting will be held October 9, 2018

Matt Ahrens gave a talk at BSDCAN: How ZFS Snapshots Really Work at BSDCAN, May 2019


The high-level goals of OpenZFS are:

  • to raise awareness of the quality, utility, and availability of open source implementations of ZFS
  • to encourage open communication about ongoing efforts to improve open source ZFS
  • to ensure consistent reliability, functionality, and performance of all distributions of ZFS.

The main technical goal of OpenZFS is easier sharing of code between platforms. Strategies include:

We accept donations to cover our ongoing costs.

OpenZFS is an associated project of SPI (Software in the Public Interest). SPI is a 501(c)3 nonprofit organization which handles our donations, finances, and legal holdings. You can donate through paypal using the link below:

Site orientation

All main pages (alphabetical order) …