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Welcome to OpenZFS

OpenZFS Developer Summit 2020

The 2020 OpenZFS Developer Conference is being held October 6-7 (Tue-Wed), as an online conference.


The conference will resume at 4:00 PM Pacific Time Wednesday


Tuesday Schedule (Pacific Time)

Time Title Speaker Company Presentation/Video
9:00 - 9:20 State of OpenZFS Matt Ahrens Delphix Slides
9:20 - 9:40 ZFS Caching: How Big Is the ARC? George Wilson Delphix Slides
9:40 - 10:00 Persistent L2ARC George Amanakis Independent Slides
10:00 - 10:20 BREAK / BREAKOUT sessions
10:20 - 11:00 ZIL Performance Improvements for Fast Media Saji Nair Nutanix Slides
11:00 - 11:20 BREAK / BREAKOUT sessions
11:20 - 11:40 Sequential Reconstruction Mark Maybee Cray Slides
11:40 - 12:20 dRAID, Finally! Mark Maybee Cray Slides
12:20 - 1:20 LUNCH / BREAKOUT sessions
1:20 - 2:00 Send/Receive Performance Enhancements Matt Ahrens Delphix Slides
2:00 - 2:20 BREAK / BREAKOUT sessions
2:20 - 2:40 Improving “zfs diff” performance with reverse-name lookup Sanjeev Bagewadi & David Chen Nutanix Slides
2:40 - 3:00 Performance Troubleshooting Tools Gaurav Kumar Nutanix Slides
3:00 - 3:10 Closing Matt Ahrens Delphix
3:10 - 4:10 hang out everyone

Wednesday Schedule (Pacific Time)

Time Title Speaker Company
9:00 - 9:10 Intro Matt Ahrens Delphix
9:10 - 9:30 File Cloning with Block Reference Table Pawel Dawidek Fudo Security
9:30 - 9:40 Default-Compatible Pool Features Josh Paetzel Panzura
9:40 - 10:10 Additional pitches TBD day-of
10:10 - 4:00 hacking! everyone
4:00 - 5:00 Hacking presentations, voting & awards everyone
5:00 - 6:00 hang out everyone

Thanks to our Sponsors!

Diamond Sponsors

  • Delphix

Platinum Sponsors

  • OSNEXUS

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 (2128 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:



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