A creative hybrid combining the OpenSolaris kernel with Ubuntu's userland and APT packaging. After Oracle killed OpenSolaris in 2010, funding dried up and Nexenta OS was discontinued in 2012. Its replacement, Illumian, lasted less than a year.
Nexenta OS combined the OpenSolaris (later illumos) kernel — featuring ZFS, DTrace, and Zones — with Ubuntu's GNU userland and APT package manager. This required significant integration work to bridge the Solaris kernel interfaces with Linux-oriented userland tools.
Nexenta OS was born from a clever idea: what if you could combine the best of Solaris (ZFS, DTrace, Zones) with the best of Linux userland (APT, Ubuntu packages, familiar GNU tools)? Released in 2008, it used the OpenSolaris kernel with Ubuntu's package management and user-space utilities, creating a hybrid that appealed to administrators who wanted Solaris technology without the Solaris learning curve.
The project was backed by Nexenta Systems, a company that also produced NexentaStor, a commercial storage appliance based on the same technology. Nexenta OS served as the community edition and development platform for the commercial product. This seemed like a sustainable model — community project feeds commercial product, commercial revenue funds community project.
Then Oracle acquired Sun Microsystems in 2010 and promptly killed OpenSolaris. This pulled the rug out from under every OpenSolaris-based distribution, including Nexenta OS. While the illumos project stepped up to provide an open-source continuation of the Solaris kernel, Nexenta's specific approach (combining it with Ubuntu userland) required significant adaptation work.
Nexenta OS reached version 3.1.3.5 before being discontinued on October 31, 2012. The company attempted a pivot: in late 2011, the Nexenta OS brand was replaced with 'Illumian,' a new distribution based on illumos with Debian packaging. But Illumian was dead on arrival — version 1.0 was released in February 2012, and the project was abandoned shortly afterward.
Nexenta Systems continued with its commercial NexentaStor product, but the open-source community distribution was gone. The episode illustrated how corporate-backed community distributions can evaporate when the business strategy changes, leaving users stranded.
Nexenta OS 1.0 released, combining OpenSolaris kernel with Ubuntu userland
Oracle kills OpenSolaris; illumos project announced as community continuation
Nexenta OS brand terminated; replaced by Illumian
Illumian 1.0 released
Nexenta OS officially discontinued
Illumian also abandoned after single release
Nexenta OS showed that creative hybrid approaches (Solaris kernel + Linux userland) can produce interesting systems but are extremely fragile when they depend on upstream projects that can be killed by corporate decisions. The illumos ecosystem survived through OpenIndiana and SmartOS, but Nexenta's specific vision died.