OviOS Linux version 2.10 Antares with replication and HA Cluster available now. Download link here or at Sourceforge.
OviOS is the fastest and easiest way to create a Linux unified storage server. 
Follow the 4 steps in the Admin Guide to create a fully functional SMB, NFS and iSCSI storage server in less than 10 minutes.

OviOS Linux is an enterprise level storage OS which combines open source technologies to provide an easy to use, performance oriented storage system. The goal is to keep OviOS Linux a pure storage appliance-like OS. It targets users and admins who need a stable out-of-the-box iSCSI, NFS, SMB and FTP server, and Linux and storage engineers who want to learn how to build a system from scratch. Click here to visualize possible use cases.

The OviOS Linux iso image can also be used as a rescue image for ZFS on Linux systems. After the system starts, disable the skip import option and start zfs-admin:
ovios-shell> options skip.import off
ovios-shell> zfs-admin start

All packages have been built and tested in house. A list of installed packages can be found here.

OviOS uses pacman as a package manager. However there is no relation between Arch Linux or any other Linux distro and OviOS Linux.  

The system is provided with all needed packages for a stable storage server. Due to the way it's built, storage admins can add more packages, by building from source.

There are 2 ways this can be achieved:
                      1. Build using the general build method (./configure && make && install)
                      2. Build using makepkg and a PKGBUILD. See and example here.
                      or send a request for a specific package via email / contact form.

With OviOS Linux the user has complete control over how the system should work, what extra packages are needed and what services should run.

The following principles apply to OviOS Linux: 

Customizable. OviOS is highly customizable, as new packages can be added easily by building from source. The OS functionality is also customizable via the ovios.conf file. 

Independent. OviOS Linux is not based on or derived from any other Linux Distro, and is fully compatible with the Linux Standard Base.

Simple. OviOS simplicity means no extra software, configurations and sophistications. OviOS uses the minimal amount of applications needed to allow it to function as a storage OS. 
The modifications to the software included are minimal and only distro-specific.

Lightweight. The Linux Kernel is stripped down of all drivers and modules not required for a server distro. 
Lightweight also means no GUI. A GUI just makes simple tasks simpler, and complex task impossible. A GUI would also require considerable amount of resources, which can be better used to serve data.