Openfiler — FreeNAS alternative?

Openfiler is a powerful, intuitive browser-based network storage software distribution. Openfiler delivers file-based Network Attached Storage and block-based Storage Area Networking in a single framework.

Openfiler uses the rPath Linux metadistribution. It is distributed as a stand-alone Linux distribution. The entire software stack interfaces with third-party software that is all open source.

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