The world’s number one open-source operating system, TrueNAS brings the performance and features of the legendary OpenZFS file system in an easy to use package. Available in two free and open-source software versions, TrueNAS also comes as a professionally-supported Enterprise solution when coupled with iXsystems branded hardware.
TLC (Triple-Level Cell) and QLC (Quad-Level Cell) are the two NAND flash types behind most enterprise SSDs today. TLC stores 3 bits per cell, QLC stores 4. The extra bit gives QLC roughly a third more density per wafer, and typically twice the density per SSD, at the...
Run a TrueNAS pool long enough, and someone will warn you: stay under 80% full. The "80% rule" for capacity is like a ghost story of ZFS storage administration. Everyone has heard of it, but ask a room of admins why it exists, and the answers get vague fast. It gets...
Patch notes are supposed to be boring. A short list of CVEs, a version bump, nothing to see here. That stopped being true the moment AI models got better at finding vulnerabilities than most people are at writing proof-of-concepts for them. TL;DR: TrueNAS 25.10.5...
When one of the world's largest grocery retailers moves to migrate 40,000 server workloads off its hypervisor stack while suing its software vendor for more than £100 million, enterprise IT takes notice. According to Tesco's High Court filing, the retailer purchased...
"Compression saves space, but it costs performance." That used to be true. It's why plenty of admins still leave it off by default, or only turn it on for cold archive data where nobody will notice the tax. That math made sense when CPU was scarce and every cycle...
"Add more RAM" is the right answer to a slow storage system more often than not; but it’s also not always the answer you get to give. Budget caps it. Technical limitations of your motherboard cap it. Consolidating more workloads onto fewer nodes caps it hardest of...
TrueNAS 25.10.4 is now the most popular version of TrueNAS and has reached General and Mission-critical status. TrueNAS 25.10.5 patches eight kernel CVEs (including two local privilege escalations) and fixes six production bugs spanning backup, monitoring, and access control. It’s the fifth point release in the 25.10 line since October 2025, and 25.10 is now running on more systems than any other version TrueNAS ever has.
Enterprise storage is usually evaluated on three familiar dimensions: performance, capacity, and price. Those metrics matter. But they leave out a more fundamental question: Can you trust the data? That question deserves a much bigger role in enterprise infrastructure...
TrueNAS Connect is TrueNAS's browser-based management service — it lets you deploy, monitor, and update TrueNAS systems from one dashboard instead of logging into each one separately. Eight months after launch, TrueNAS Connect is on its way to a three-tier structure:...
The all-flash default made sense for a while. NVMe prices dropped fast enough that overprovisioning felt responsible. Why spend time designing careful storage tiers when flash was cheap enough to ignore the question? That logic expired somewhere around late 2025, when...
