OpenZFS Developer Summit 2025

The thirteenth annual OpenZFS Developer Summit and second annual OpenZFS User Summit took place in Portland, Oregon, USA October 25th through 28th, 2025.

YouTube Playlist Peertube Playlist

The 2025 Developer Hackathon and Collaboration Idea Spreadsheet

User Presentations Saturday October 25th

Title	Speaker	Company	Slides	Recording
2025 OpenZFS User Summit Welcome	Michael Dexter	Co-Organizer		YouTube Toobnix
Just a Bunch Of Disks? Really?	Garrett Wollman	MIT	PDF	YouTube Toobnix
Responsible Replication with Zelta	Daniel Bell	Bell Tower	PDF	YouTube Toobnix
Responsible Replication with Zelta Roundtable	All Present			YouTube Toobnix
Monitoring and Networking Roundtable	All Present			YouTube Toobnix
Quality Assurance Roundtable	All Present			YouTube Toobnix

User Presentations Sunday October 26th

Title	Speaker	Company	Recording
Support Roundtable	Allan Jude and Daniel Bell	Klara and Bell Tower	YouTube Toobnix
User-Space OpenZFS	All Present		YouTube Toobnix
Continuous Replication	All Present		YouTube Toobnix
Channel Programs and libzfs	All Present		YouTube Toobnix
Object Storage	All Present		YouTube Toobnix

Developer Presentations Monday October 27th

Title	Speaker	Company	Slides	Recording
AnyRAID VDEVs	Paul Dagnelie	Klara	PDF	YouTube Toobnix
Future Storage Capacities	Muhammad Ahmad	Seagate	PDF	YouTube Toobnix
Large Label and Blockpointer-V2	Allan Jude	Klara	PDF	YouTube Toobnix
OpenZFS on Fully Elastic Low-cost Storage	Daniel Perry	AWS	PDF	YouTube Toobnix
QLC NAND: When the disk needs ZFS’ help	Allan Jude	Klara Systems	PDF	YouTube Toobnix
Welcome to ZettaLane Systems	Sam Sammandam	ZettaLane Systems	PDF	YouTube Toobnix

Developer Hackathon Tuesday October 28th

Title	Recording
Hackathon Projects	YouTube Toobnix

Thank you SDF Public Access UNIX System for Toobnix hosting

Sponsorship

Help make this event a success with a financial donation, a travel grant, in-kind donations such as food and beverages, and ZFS-related hardware loans. Please email editor@callfortesting.org for details. OpenZFS is a member project of SPI (Software in the Public Interest) a 503(c)(3) public-benefit non-profit organization, making your sponsorship tax-deductible as an individual or organization.

Individual sponsors are invited to donate via PayPal:

Thank you Diamond Sponsor

Thank you Platinum Sponsor

Thank you Gold Sponsors

Thank you Silver Sponsor

Thank you Bronze Sponsor

Code of Conduct

The OpenZFS community values respectful, welcoming behavior towards everyone. This enables our members to thrive and contribute, and encourages new participants to join our event . The OpenZFS Code of Conduct applies to attendees, speakers, sponsors, vendors, and staff of this event, and will be enforced by staff members throughout the event.

Participants asked to stop inappropriate behavior are expected to comply immediately or be expelled from the conference at the discretion of the conference organizers.

Contact information for reporting a violation of the code of conduct will be provided during the event. To report a violation of the code of conduct, take one of the following actions: