Nexenta Systems the guys behind the Debianised version of OpenSolarias have release a commercial storage appliance version of Nexenta:
Nexenta Storage Appliance is designed and built to operate as 2nd tier storage alongside pre-existing commercial storage, providing online continuation of data for months and years, with tapes relegated to archival purposes only. The appliance is targeted for 2nd-tier NAS and iSCSI applications requiring extremely low cost storage as well as dramatically simplified provisioning, expansion, backup, replication and archiving. NexentaStor can also be used as a primary NAS in businesses that wish to expand at closer to commodity pricing.
They have a VMware based evaluation version for download, and access to the bare metal install requires talking to their sales team.
From Martin Man.