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Welcome to OpenZFS

Planning is underway for the eleventh annual OpenZFS Developer Summit. This in-person event will be held in San Francisco Oct 16-17 (Mon-Tue), 2023.

OpenZFS Developer Summit 2023

Key Dates

Jul 31, 2023 Conference registration opens
Begin submitting Abstract / Presentation proposals by emailing
Sep 5, 2023 Abstract / Presentation proposal deadline
Sep 15, 2023 Selected speakers notified
Oct 16-17, 2023 Conference


Please email for details.

Thanks to our Diamond Sponsors

  • Delphix

OpenZFS Developer Summit 2022

OpenZFS Dev Summit 2022

The tenth annual OpenZFS Developer Summit was held in person, Oct 24-25 in San Francisco.

See the OpenZFS Developer Summit 2022 event page for more info.

Title Speaker Company Slides Video
State of OpenZFS Matt Ahrens Delphix slides
Operating OpenZFS at scale Satabdi Das Amazon slides video
Special Announcement Jorgen Lundman slides video
Block Cloning for OpenZFS Pawel Jakub Dawidek Fudo Security slides video
CHERI memory safety Brooks Davis SRI International slides video
zvol performance Tony Hutter LLNL slides video
Refining OpenZFS compression Rich Ercolani Independent slides video
Run ZFS in userland Ping Huang IOMesh slides video
Faster ZFS scrub and other improvements Alexander Motin iXsystems slides video
Storage Multi-Tenancy For Containers Allan Jude Klara Systems slides video
Shared L2ARC Christian Schwarz Nutanix slides video

See OpenZFS Developer Summit 2021 for presentations and information about last year's (virtual) conference.

Introduction to OpenZFS

OpenZFS is an open-source storage platform. It includes the functionality of both traditional file systems and volume manager. It has many advanced features including:

  • Protection against data corruption. Integrity checking for both data and metadata.
  • Continuous integrity verification and automatic “self-healing” repair
    • Data redundancy with mirroring, RAID-Z1/2/3 [and DRAID]
  • Support for high storage capacities — up to 256 trillion yobibytes (2^128 bytes)
  • Space-saving with transparent compression using LZ4, GZIP or ZSTD
  • Hardware-accelerated native encryption
  • Efficient storage with snapshots and copy-on-write clones
  • Efficient local or remote replication — send only changed blocks with ZFS send and receive

Contributing to OpenZFS

The OpenZFS project brings together developers from the Linux, FreeBSD, illumos, MacOS, and Windows platforms. OpenZFS is supported by a wide range of companies.

There are many ways to contribute to OpenZFS including:

Get Started with OpenZFS

Frequently Asked Questions

OpenZFS concepts

A non-exhaustive list of OpenZFS features

OpenZFS Technical Resources

How to install OpenZFS

OpenZFS manual pages

Feature Details. Detailed subsystem/feature blogs, on-disk format specifications: Developer Resources

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: