Zero RPO Across Two Data Centers. No Delay. No Gaps. We engineered a multisite Proxmox + ZFS architecture using synchronous mirroring, cross-server NVMe pools, and failover planning to achieve zero RPO — plus up to 68% performance gains. Check out the case study: na3.hubs.ly/y0lYtf0

European organizations are under increasing pressure to maintain true data sovereignty. Join Allan Jude from Klara Inc and Eirik Øverby from Entersekt, as they explain why Entersekt chose ZFS for EU sovereign storage. Register here: na3.hubs.ly/y0k7Q00 #OpenSource #Datasovereignty #ZFS

Fast Dedup in OpenZFS 2.3 makes ZFS dedup viable for Proxmox VE 9.x — but only with proper pool design and memory budgeting. We cover architecture, DDT quotas, ARC sizing, workload selection, and operational controls. Read the full guide: na3.hubs.ly/y0l77K0

Need to scrub only data written during a specific window? Use zpool scrub -S <start> -E <end> to target blocks written between two timestamps. Scrub Smarter, Not longer. 😎

ZFS has long struggled with mixing different-sized drives in the same pool. HexOS partnered with Klara to develop ZFS AnyRaid, a new vdev type enabling mixed-drive layouts with up to 33% higher usable capacity—without compromising ZFS integrity. Read more → na3.hubs.ly/y0k7Bf0

EU data sovereignty without vendor lock-in? Join Allan Jude, Co-founder and Head of Solutions Architect, and Eirik Øverby, Chief Operations Officer, to discuss why Modirum chose ZFS for secure, sovereign storage. March 18, 11AM EDT RSVP → na3.hubs.ly/y0k7Q00

Thanks to everyone who joined our webinar on Modern VDI on Proxmox: ZFS Reliability and GPU Acceleration at Lower Cost! Allan Jude and Wendell Wilson shared real-world guidance on building reliable, GPU-accelerated VDI with Proxmox and ZFS. Watch the recording here → na3.hubs.ly/y0kbVM0

Running Proxmox on ZFS? ARC and L2ARC sizing matters more than most configs. Our latest article explains how ARC and L2ARC really work, what not to do, and how to size them properly for Proxmox workloads. 👉 Read the article: na3.hubs.ly/y0k7pZ0 #Proxmox #ZFS #OpenZFS

Building storage that scales without sacrificing reliability takes more than raw performance. Our latest OpenZFS whitepaper explores how teams use OpenZFS to design secure, high-performance infrastructure — with real-world examples and best practices you can apply today. 👉 lnkd.in/ekZYmEAx

Using zfs rewrite -P lets you rewrite data logically, applying updated properties or allocation behavior without re-replicating unchanged blocks. That means less I/O, and faster operations when rebalancing or updating datasets. #ZFS #OpenZFS #Storage #Infrastructure

Enterprise-grade storage doesn’t have to mean enterprise lock-in. This article breaks down how ZFS on Proxmox delivers snapshots, replication, and data integrity—without proprietary arrays or Ceph complexity. 👉 Read: klarasystems.com/articles/bui...

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: klarasystems.com/webinars/zfs...

⏳ 1 week left. Don't forget to save up to 35% on your first year of ZFS Enterprise Infrastructure Support when you sign by Feb 17. Direct access to OpenZFS experts for production systems—at a limited-time discount. 👉 na3.hubs.ly/y0jDjt0

HexOS faced stranded capacity with traditional ZFS vdevs. Partnering with Klara, they created ZFS AnyRaid, enabling mixed-drive layouts with 20–33% more usable capacity, lower-cost upgrades, full ZFS reliability, and simplified storage management. 🔗 Read more: klarasystems.com/content/http...

Our webinar is 1 week away! Allan Jude from Klara Inc. and Wendell Wilson from Level1techs will talk about how to build GPU-accelerated modern VDI on Proxmox and ZFS without software lock-in or licensing sprawl. 📅 Feb 18, 8AM PST | 11AM EST RSVP: na3.hubs.ly/y0jDhV0

For Proxmox workloads, pool and VDEV topology is the architecture. Mirrors vs RAID-Z, SLOG, ARC/L2ARC, and recordsize choices define VM performance, resiliency, and failure behavior. We break down how to design ZFS pools that actually match Proxmox workloads.👇 na3.hubs.ly/y0jD4p0 #ZFS #Proxmox

ZFS snapshots on Proxmox make VM backups instant and space-efficient. Create point-in-time copies you can roll back in seconds — perfect for fast recovery and safe experimentation. Simple, powerful, and built right into ZFS. #ZFS #Proxmox #OpenZFS

ZFS 2.4 introduced zfs rewrite, a clean way to reapply dataset settings to existing data. Rewrite a file or directory in place, and ZFS treats it like the data was rewritten with itself. Want more details? Watch the OpenZFS 2.4 webinar recording: klarasystems.com/webinars/new...

Meet Wendell Wilson — Founder & Lead Architect at Level1Techs. Wendell will be joining Klara for our upcoming webinar to discuss modern VDI on Proxmox, including ZFS reliability and GPU acceleration—without enterprise complexity or cost. 👉 Register now na3.hubs.ly/y0hnbd0

Teams are rethinking where their critical systems live. OpenZFS stands out in production—open source, proven at scale, no licensing traps—but expert support matters. Save up to 35% on Klara’s OpenZFS support through Feb 17, 2026. Get tuning and long-term support: na3.hubs.ly/y0hn9K0

A ZFS pool can be “healthy” and still put your data at risk. In our newest article, we break down how to actually monitor OpenZFS systems, from scrubs and zpool status to automated snapshot, health, and capacity monitoring using Sanoid. 👉 Read more: https://na3.hubs.ly/y0hmYv0

We hope you've been enjoying the new OpenZFS 2.4 release! 2.4 brought significant performance optimizations, enhanced data security, and improved hardware support for Linux (up to 6.18) and FreeBSD (14-16). Whats your favorite new feature?

After expanding a vdev or changing compression settings, existing data won’t automatically rebalance. A ZFS rewrite lets you update selected files in place—applying new allocation and compression properties without moving data off the system.

Self-service restores = real time savings. With .zfs/snapshot, users can recover their own files—no backup tickets, no admin intervention. One less call when that critical Excel file breaks. For more ZFS tips and tricks, tune into the webinar recording:: https://bit.ly/4oY29L3

Modern VDI without fragile storage or enterprise price tags. Join Klara & @level1techs.bsky.social to talk Proxmox, ZFS reliability, and GPU-accelerated VDI—built on open infrastructure that actually scales. Feb 18, 8AM PT | 11AM ET 👉 Register here https://na3.hubs.ly/y0gZfC0

ZFS and Btrfs look similar on a feature list. In production, they behave very differently. This article breaks down the architectural choices that affect reliability, RAID safety, and long-term data integrity. 👉 https://bit.ly/4q5WQd5

Automate ZFS replication with syncoid: syncoid -r testpool/source testpool/target Replicate datasets and snapshots together, with automatic incremental updates—ideal for backups and DR setups. #ZFS #OpenZFS

Thanks to everyone who joined A New Year, A New ZFS: What 2.4 Brings to the Table 🎉 Allan Jude and Paul Dagnelie covered what’s new in ZFS 2.4, why it matters, and how to approach upgrades with confidence. Missed it live? Catch the recording here: https://bit.ly/4qebJKV #ZFS #OpenZFS

Fastmail runs a globally active email platform with tens of millions of small files on NVMe-backed OpenZFS. When unexpected CPU and memory behavior appeared under real production load, they turned to Klara for help! 👉 Read the full case study: https://bit.ly/4pSpvCo

🎉 Our next webinar starts soon! Join Allan Jude & Paul Dagnelie for our ZFS 2.4 webinar, covering performance updates, stability improvements, and practical operational guidance. Don’t miss out. ⏰ Starting in 1 hour! 👉 Join the webinar: https://bit.ly/3MRm4hk

ZFS in production exposes problems you won’t see at small scale. This article covers real-world deployment patterns, common pitfalls, and the practices needed to keep ZFS reliable as systems grow. 👉 Read the full article and avoid costly mistakes: https://bit.ly/49LapZk

We get great questions during our webinars and sometimes we don't answer all of them. Allan Jude answers them here in our follow up Q&A session—covering non-ZFS backups, multi-tenant security, and ZVOL tuning for virtualized environments. 👉 https://bit.ly/4jSgBU0

Keep a close eye on your ZFS pool health with Sanoid monitoring. The `sanoid --monitor-health` command reports on the health of your vdevs, and all of your zpools—conveniently designed to integrate with whatever monitoring system you use.

🔒 Protect critical ZFS snapshots! Like a lockout tag on machinery, the ZFS hold feature lets you put holds on snapshots to prevent accidental deletion—even in automated workflows For more tips and tricks, tune into the webinar recording: https://bit.ly/4qebJKV

Running OpenZFS in production? Klara’s ZFS Infrastructure Support gives you direct access to experienced ZFS engineers for tuning, troubleshooting, upgrades, and best practices. Save up to 35% when you sign by Jan 31, 2026 👉 https://bit.ly/3YxU3xV

🎉 Just 1 week until our ZFS 2.4 webinar! Join Allan Jude & Paul Dagnelie to explore performance updates, stability improvements, and operational tips. Don’t miss your chance to start 2026 with confidence. 📅 Jan 22, 8 AM PT | 11 AM ET 👉 Register now https://bit.ly/44AjWAR

Silent data corruption is one of the most dangerous storage failures. ZFS scrubs verify every block, detect checksum errors, and repair data before damage accumulates. Learn how scrubs work, and how to read zpool status results. Read the full article: https://bit.ly/4pDQ7a8

Why is this ZFS snapshot so big? In last week’s Klara webinar, we showed how zfs diff reveals exactly what changed—file adds, deletes, overwrites, and more. Perfect for troubleshooting, forensics, and recovery. ▶️ Watch the recording https://bit.ly/4qg2R7o

Automate your ZFS snapshots with Sanoid! 🛠 Save time, reduce risk, and keep your data safe by letting Sanoid handle snapshot creation automatically. Install it easily with: FreeBSD: sudo pkg install sanoid Ubuntu: sudo apt install sanoid Automation makes it simple, reliable, and efficient.

ZFS tip from last month’s Klara webinar 💡 Quotas limit how much space users or datasets can consume. Reservations guarantee space will be there when you need it. Learn when to use each—and why it matters. ▶️ Watch the recording for more: https://bit.ly/4asBBhD

Discover what’s new in OpenZFS 2.4. Join Allan Jude and Paul Dagnelie as they walk through the most impactful updates—covering performance, reliability, and when upgrading makes sense for production systems. Save your spot: https://bit.ly/4qlr1xz

Optimize your storage with Klara! Our ZFS Infrastructure Support guides you through tuning, documentation, and verifying replication and snapshots—without manual guesswork. Save up to 35% when you sign up by Jan 31. 👉 Learn more about ZFS support from Klara https://bit.ly/4p5UwT1

We're excited to announce our cohost Paul Dagnelie to our upcoming webinar! With over a decade of experience in ZFS, he is a major contributor to a number of areas of the OpenZFS codebase, and a repeat presenter at the OpenZFS Summit. Learn more:: https://bit.ly/49h5XSZ

We're excited to announce our cohost Paul Dagnelie to our upcoming webinar! With over a decade of experience in ZFS, he is a major contributor to a number of areas of the OpenZFS codebase, and a repeat presenter at the OpenZFS Summit. Learn more: https://bit.ly/3YyH1jL

Looking to spot storage bottlenecks in real time? zpool iostat 1 gives you a live, second-by-second view of IOPS and bandwidth across your pools. A simple command that delivers deep visibility into ZFS performance. #ZFS #OpenZFS #Klarasystems

Getting replication right on ZFS means avoiding DIY scripts and relying on proven tools like Syncoid, zrepl, and BZFS. They’ve already solved the edge cases so you don’t have to. Watch the webinar for more tips and tricks → https://bit.ly/4o7QOYs

Virtualization isn’t one-size-fits-all—and the right choice can dramatically impact performance. In this article, we put FreeBSD’s bhyve head-to-head with Linux’s KVM to see how each stacks up across compute and storage workloads. Read more: https://bit.ly/4pkTX8j

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