The most important feature customers expect from a storage array is data integrity protection. This is why we base TrueNAS and FreeNAS on the OpenZFS enterprise, open source file system. Unfortunately, the file systems used by other vendors and projects rarely take...
Category: TrueNAS
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.

Get Maxed Out Storage Performance with ZFS Caching
One of the more beneficial features of the ZFS filesystem is the way it allows for tiered caching of data through the use of memory, read and write caches. By optimizing memory in conjunction with high speed SSD drives, significant performance gains can be achieved...
How TrueSync Beats Traditional Backup Methods
The TrueNAS Unified Storage appliance provides a centralized storage repository for all your data, allowing for great savings in the total disk space required and making management simple. Having all your information in one place offers many advantages, but you are...
Why We Use ZFS
One of the key pieces of technology underlying TrueNAS and FreeNAS is the ZFS filesystem. In 2001, developers at Sun Microsystems began work on ZFS and officially released it as part of OpenSolaris in 2005. Three years later, a port of ZFS was released as part of...
DCIG Awards TrueNAS with Another Excellent in Latest Guide
We are pleased to announce that industry analyst firm DCIG just gave the TrueNAS Z20 and TrueNAS Z30 an “Excellent” rating in their 2015-2016 Midsize Enterprise Storage Array Buyer’s Guide. This is an outstanding testament to the growing recognition that TrueNAS is...
TrueNAS High-Availability (HA) Explained
I am often asked if the two storage controllers in a TrueNAS high availability configuration are active/active or active/passive. They’re neither. They’re “active/standby.” Allow me to explain the difference. In the case of an active/passive and active/standby disk...
Lies, Damn Lies, and Benchmarks
If you’ve noticed, we don’t publish IOPS or latency numbers for TrueNAS or FreeNAS storage. Now, we realize if you’re comparing storage solutions by looking at brochures and fact sheets, this might be frustrating, but I assure you we don’t do it because we’re hiding anything. In fact, it’s quite the opposite. We do it because it’s in your best interest.

TrueNAS 9.3 State of the Union
I’m excited to announce the release of version 9.3 of our TrueNAS Storage Appliance software. Simply put, this is the best release in our enterprise storage line yet. The first thing you’ll notice is a simplified and redesigned Web UI. We’ve removed the interface tabs...
FreeNAS vs TrueNAS
NOTE: This is historical content that may contain outdated information. View the newest version of the blog here. “What’s the difference between TrueNAS and FreeNAS? Is TrueNAS just FreeNAS installed on a server?” If you look at the software feature list, there aren’t a ton of differences. So really….what’s the difference? The first difference […]