In observance of the holidays, our offices will be closed starting December 22, giving our team time to rest and celebrate with loved ones. We’ll resume normal operations January 5. Our team at Klara wishes our community a warm, joyful, and restful holiday season! 🎄✨

OpenZFS Dev Summit 2025: AnyRAID VDEVs🎥 Paul Dagnelie explains AnyRAID—an upcoming ZFS VDEV that supports mixed disk sizes, online expansion, rebalance, and contraction, without sacrificing reliability. Tune into the recording: https://bit.ly/48JpKKQ

Start the year off right with ZFS 2.4. Join Allan Jude & Paul Dagnelie for a practical look at what’s new—performance gains, reliability updates, and when upgrading makes sense. 📅 Jan 22, 2026 ⏰ 8 AM PT | 11 AM PT 👉 Register now https://bit.ly/3MFnsUn

🎁 Save up to 35% on ZFS support in 2026! Sign up by Jan 31 and get access to Klara’s ZFS experts. ✔️ Teams running mission-critical workloads ✔️ Organizations without deep in-house ZFS expertise ✔️ support with incidents, maintenance, tuning, and best-practices learn more: https://bit.ly/49eoW0v

ZFS’s send/receive pipeline provides a production-grade mechanism for replicating datasets safely. By streaming a point-in-time snapshot (zfs send) directly into a target system (zfs receive), you get consistent data transfers with ZFS’s end-to-end integrity model ensuring nothing is lost.

Have you been enjoying our webinars? Klara’s ZFS Basecamp has articles, case studies, and past webinars organized by skill level — from ZFS basics to tuning, monitoring, troubleshooting, and backup planning. A solid resource for anyone using ZFS. Explore ZFS basecamp: https://bit.ly/4iTwglv

🎁Unwrapping ZFS — the best new features the OpenZFS community shipped this year. From unified allocation to special vdev upgrades, vectorized AES, rewrite tools, and JSON output, 2025 was a huge year for ZFS thanks to contributions from across the ecosystem. Read more here ⬇️ https://bit.ly/4rRGvL3

Thanks for everyone who joined our webinar - 12 days of ZFS: Tips, Tricks, and Treats Our team at Klara hopes you have an eventful, safe and Merry Christmas! Stay tuned for information about our upcoming webinar. If you missed it, tune into the recording: https://bit.ly/3KNqsNH #ZFS #OpenZFS

⏰It’s almost time! We’re just 1 hour away from 12 Days of ZFS: Tips, Tricks, and Treats. Join Allan Jude and Jim Salter for a rapid-fire session packed with real-world tuning strategies, scaling lessons, and practical tips. Link → https://bit.ly/49ubKp1 #OpenZFS #OpenSource

Protect your data with a simple command: zpool scrub poolname Finds and fixes silent corruption and errors—before they become real problems.

A key tip from Michael W. Lucas in our recent webinar: ZFS isn’t “just another filesystem.” Tools like df don’t apply the same way—because ZFS is a full data-management platform. Shift your mindset and the power of ZFS opens up fast. Watch the full webinar: https://bit.ly/48Uzu4H #ZFS #OpenZFS

ZFS keeps advancing and a lot of that progress comes from what we see in real-world customer environments. Our 2025 work includes safer recovery paths, improved RAIDZ performance, and AnyRAID flexibilities. Read the full article for more: https://bit.ly/3Xx1Hs5

“How many VDEVs is too many?” The answer isn’t simple. Our guide shows how adding VDEVs affects performance, resiliency, and expansion, when mirrors, RAID-Z, or DRAID make sense, and how to keep large pools fast and manageable. Read → https://bit.ly/4rsiDgW #ZFS #OpenZFS #Klarasystems

REMINDER! We’re just one week away from our webinar - 12 Days of ZFS: Tips, Tricks, and Treats Join Allan Jude and Jim Salter as they share real-world tuning strategies, scaling lessons, and design insights. Don’t miss out → https://bit.ly/3XNAX6z #OpenZFS #OpenSource

Replicate VM datasets between Proxmox nodes using native ZFS tooling. zfs send -c pool/vmdata@snap | zfs receive backup/vmdata Compression reduces transfer time, while ZFS checksums ensure what arrives is exactly what you sent.

In observance of Thanksgiving, our offices will be closed on Thursday, November 27, and Friday, November 28, to give our team time to celebrate and recharge with family and friends. We’ll resume normal operations on Monday, December 1st. Wishing our community a wonderful Thanksgiving!

Thanks to everyone who joined this week's webinar with Allan Jude and Michael W. Lucas. Tons of practical ZFS knowledge, tuning insights, and production lessons you won’t find in the docs. Catch the recording here → https://bit.ly/3K4M9bV

Featured webinar speaker alert.🚨 Jim Salter is joining our upcoming webinar. Author, mercenary sysadmin, Sanoid creator, 2.5 Admins co-host — and a longtime FOSS voice. If you’re into storage truth, and battle-tested ZFS perspective, this is for you! Register → https://bit.ly/3JTFvFr

Another webinar! 🎁The 12 Days of ZFS Allan Jude + Jim Salter are wrapping the year with 12 rapid-fire ZFS tips — performance tuning, bookmarks, snapshots, troubleshooting tricks, and plenty of sysadmin goodies. 🗓️ Dec 10 • 11 AM EST Register → https://bit.ly/3KbGy3q

DWPD once defined SSD endurance but does it still matter? Our latest blog breaks down how modern NAND, P/E cycles, and vendor specs are reshaping what “drive life” really means. Read more: https://bit.ly/4i8giDE #ZFS #KlaraSystems

We’re going live in 1 hour! ⏰ Join Allan Jude and Michael W. Lucas as they go beyond the man pages—sharing real-world ZFS tuning, scaling, and design lessons learned from production. 🗓️ Happening today at 11 AM EST Don’t miss it: #ZFS #OpenZFS #Webinar

ZFS snapshots on Proxmox make VM backups instant, consistent, and space-efficient. A single command like zfs snap pool/vmdata@backup lets you capture a full system state you can roll back to in seconds — no downtime, no duplicate data. Efficiency, reliability, and simplicity—built right into ZFS.

Turn on fast, transparent compression with zfs set compression=lz4 pool/fs lz4 compression saves space without slowing down your workloads — giving you more efficient storage and better performance, automatically. Simple command. Big impact.

We had a great time at the FreeBSD Summit in San Jose! From deep dives into FreeBSD 15.0 and pkgbase to conversations about real-world deployment challenges, the event was full of insights and collaboration. Thanks to everyone who connected with us! Tune into the recording: https://bit.ly/4nRy5QI

Only 1 week to go! Join Allan Jude and Michael W. Lucas for a session that goes way beyond the man pages—real ZFS tuning, scaling, and design lessons from production. 🗓️ Nov 19 | 11 AM EST Save your spot → https://bit.ly/4nlF7Nn #ZFS #OpenZFS

Still trusting your data to hardware RAID? With massive drives and rising URE rates, that’s a gamble. ZFS fixes RAID’s biggest flaws with checksums, CoW consistency, and quick, block-aware resilvering. Check out how ZFS steps up where RAID falls short → https://bit.ly/4i6P4gH

In our last month's ZFS on Proxmox webinar: ZFS shines when you scale up. Add drives, boost performance, done. Run it inside the hypervisor and you get local I/O with way lower latency. Watch the full recording: https://bit.ly/3JNDYk3

Even the best storage setups can face unexpected errors. When ZFS throws unrecoverable errors, zpool status -v points you to the affected files—so you can restore them from backups… You do have backups, right? 😉

Reliable storage starts long before deployment. Klara helps teams plan ZFS systems that meet real-world needs, from picking the right hardware to tuning existing infrastructure. Solve bottlenecks early and design with confidence Learn more: https://bit.ly/49Hlv2Z

Klara is at the FreeBSD Summit in San Jose! We’re excited to connect with other FreeBSD users, developers and contributors from the community. If you’re at the summit, we’d love to connect! Learn more: https://bit.ly/49tUmQW

ZFS talk, straight from the source!🚨 Allan Jude joins Level1Techs to cover modern ZFS tuning, dedup, NVMe performance, and why storage design matters more than ever. Watch the full episode: https://bit.ly/47NmCvL

You can read the man pages—but they won’t tell you this. Join Allan Jude and Michael W. Lucas as they share hard-won ZFS insights, tuning strategies, and lessons from production. 🗓️ Nov 19 | 11 AM EST Save your spot: https://bit.ly/47KQnyg #ZFS #OpenZFS #KlaraSystems #OpenSource

When disaster hits your virtual infrastructure, speed matters. ZFS snapshots + replication tools like Sanoid and Syncoid make recovery fast and reliable—getting your VMs back in minutes, not hours. Read more: https://bit.ly/3LpSIWL

We’re thrilled to welcome Michael W. Lucas to our upcoming webinar! Author of Absolute OpenBSD and DNSSEC Mastery, he’s one of the most respected voices in the FreeBSD and OpenZFS communities—bringing wit, insight, and decades of expertise. Join us: https://bit.ly/4naUF6F

The 2025 OpenZFS User and Developer Summit in Portland was packed with innovation! Klara led sessions on cross-cite clustering, AnyRAID and large-label support for modern flash devices. Catch the full recap 👇 https://bit.ly/3LlNKKz #OpenZFS #ZFS #OpenSource

Klara is headed to the FreeBSD Summit in San Jose! Will you be there? The Summit brings FreeBSD users, developers, and contributors together for sessions on what’s new in FreeBSD 15.0, pkgbase, and more. Flag us down and connect with us! Learn more: https://bit.ly/49tUmQW

👻Every sysadmin has a horror story. Allan Jude and JT told us about “The Shrinking zvol” — a 250TB volume that became 20TB with a single wrong command. ZFS is powerful… but it demands respect. Always double-check your pool names! #OpenZFS #ZFS #DataHorrorStories #KlaraSystems #Halloween

Join Allan Jude & Michael W. Lucas for our upcoming webinar - ZFS Mastery: The Bits They Don’t Put in the Man Pages. 🗓️ Nov 19 | ⏰ 11 AM EST Real tuning, production lessons, & design insights you won’t find in the manuals. 🔗 https://bit.ly/4naUF6F #ZFS #OpenZFS #Webinar

We had a great time at #OpenZFS User & Developer Summit! Thanks to everyone who joined our sessions and shared ideas. A special congratulations to those who participated in the hackathon - and congratulations to the winners! Tune into the recording: https://bit.ly/48UJCes #ZFS #OpenZFS

Build a ZFS pool that keeps running — even when hardware doesn’t. Our latest article walks through setting up ZFS with iSCSI — covering configuration, networking, and mirroring for reliable FreeBSD storage. Read the guide: https://bit.ly/4npvr4t

Remember when OpenZFS first launched back in 2013? A single codebase, bridging communities across Solaris, FreeBSD, Linux, and beyond — a turning point for open storage. How long have you been running OpenZFS? Learn more about OpenZFS and its origin story: https://bit.ly/48WPpQJ

Tomorrow’s the day! The Klara team joins the OpenZFS User & Developer Summit with three developer presentations: - 10 AM – AnyRAID with Paul Dagnelie - 1 PM – ZFS Large Label & Blockpointer-V2 with Allan Jude - 2:30 PM – QLC NAND Don't miss out! #OpenSource #OpenZFS #Storage #OpenZFSSummit

Klara’s at the OpenZFS User and Developer Summit this weekend! This event is an annual event that brings together the OpenZFS user and developer community for a mix of discussions, presentations, and hands-on work. Come chat with us! Learn more: https://bit.ly/3J7WbbH

Another great session in the books! Allan Jude and JT broke down what it really takes to run ZFS on Proxmox efficiently. Big thanks to everyone who joined live, asked questions, and shared their experiences. 📺 Couldn’t make it? Tune into the recording: https://bit.ly/3WjhAll #ZFS #Proxmox #OpenZFS

We’re live in 1 hour! ⏰ Running Proxmox with ZFS? Don’t miss Allan Jude & JT Pennington sharing real-world tuning, caching, and replication strategies. Build efficient, resilient storage that performs at scale. Join us live → https://bit.ly/4o6p9aD #ZFS #Proxmox

Throughput isn’t everything. IOPS, latency, throughput — what do these storage metrics really tell you about performance? Read our latest blog: https://bit.ly/471Kk8g #ZFS #OpenZFS #Storage

Ever wonder who ran that command? 🕵️ With zpool history, you’ll have a full log of recent pool activity. Perfect for audits and troubleshooting!

Klara’s is going to the OpenZFS Developer Summit and will be presenting! - 10 AM – AnyRaid with Paul Dagnelie - 1 PM-1:50 PM – Large Label & Blockpointer-V2 with Allan Jude - 2:30 PM – QLC NAND: When the hardware needs help from the filesystem with Allan Jude Learn More: https://bit.ly/3J7WbbH

What has surprised you most about ZFS's evolution? When Oracle acquired Sun and closed the ZFS source code, the community didn’t back down — it regrouped 💪. Matt reflects on how ZFS evolved from a closed walls to a truly multilateral open source project. 🚀 Watch more: https://bit.ly/4qoUp6W #ZFS

⏳ Just 1 week away! Join Klara’s Allan Jude & JT Pennington for ZFS on Proxmox: Performance & Efficiency Best Practices. They’ll cover tuning ZFS for performance, optimizing compression & caching, and setting up efficient replication — all tailored for Proxmox environments. 🔗 https://bit.ly/3IPCgOE