Openfiler
What is Openfiler?
An open source storage solution
It's also referred to as a unified SAN & NAS protocol suite. Openfiler offers high availability cluster failover and block level remote replication for disaster recovery, all presented in a powerful web-based GUI. The articles here focus on the installation and configuration of your Openfiler SAN.
Visit the Openfiler site to find out more and to download the latest version.