SmartOS is an illumos-based operating system built for running clouds. It boots from the network or a USB key into memory, runs containers and virtual machines side by side, and puts ZFS and DTrace in the base system.
ILLUMOS · ZONES · ZFS · DTRACE · KVM · BHYVE · OPEN SOURCE
SmartOS on its own is a hypervisor. Triton adds the cloud around it: identity, tenancy, networking, images, storage, and an API your teams can use directly.
SmartOS with the cloud platform on top. Run it as Triton Cloud, operated by us, or as Triton Private Cloud on infrastructure you control.
A single host you install, image, and operate with the vmadm and imgadm tools. Good for labs, home servers, and learning the platform from the bottom up.
SmartOS descends from OpenSolaris through illumos. Joyent built it to run its public cloud and the private clouds it shipped as Triton DataCenter. Samsung acquired Joyent in 2016 and the platform kept running at scale. Through the 2022 transition to independent stewardship, SmartOS stayed open source, and Triton Cloud runs on it today.
Sources: Samsung acquisition announcement · A new chapter for Triton and SmartOS · Full lineage
Most hypervisors bolt storage, networking, and observability on from the outside. SmartOS inherited them from the kernel.
Zones run workloads on the host kernel with hard isolation and no guest OS to boot, patch, or pay for in memory.
Every zone gets its own network stack and addresses on the fabric. No port mapping, no overlay, no NAT between services.
Copy-on-write snapshots, clones, checksums, and compression are part of the operating system. Images provision as clones in seconds.
DTrace instruments the kernel and applications on a live host with zero overhead when disabled, so you can ask questions of production instead of guessing.
CPU, memory, disk I/O, and network limits are enforced by the kernel per zone, which keeps one noisy tenant from starving the rest.
Linux, Windows, and BSD guests run in KVM or bhyve virtual machines inside zones, so they inherit the same isolation, storage, and resource model.
The wiki covers installation, images, zones, and virtual machines for a standalone host. For production infrastructure, Triton puts a cloud around the same kernel.