Well, then this might be the answer you are looking for. Gluster FS is a GREE, Open Source, solution that can take common "off the shelf" hardware and make them look as one. SMB's and small Enterprises alike might actually want to look at this. From a cost perspective, you cannot beat it.
Description - GlusterFS is a scalable network filesystem. Using common off-the-shelf hardware, you can create large, distributed storage solutions for media streaming, data analysis, and other data- and bandwidth-intensive tasks. GlusterFS is free and open source software.
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