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I'm looking to build a RAID-5 or RAID-6 hard disk array to be used as a centralized backup location for my home network. I have a lot of 4-8GB DVD ISO files which I intend to serve over the network to my TV using DLNA or something similar. I need decent write times, fast read times, and preferably a way to connect this array to my network router over USB. I'll probably be using ext3/4 on it (I'd use btrfs if my router supported it :-[).

Is there a way to build a RAID array that is accessible over USB? I'm kind of new to this and most guides assume you're running a RAID array inside your machine. I need at least 5TB of space, and I need redundancy, so I prefer RAID-6. How can I go about accomplishing this?

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Why USB, doesn't your network router support a network connection? Any system, DIY or otherwise, that will manage RAID 5 or 6 will have a network connection. – Hydaral Feb 2 '11 at 5:40
up vote 1 down vote accepted

You could always opt to get an external device that offers a USB interface, and perhaps a network interface allowing you to run this device as a NAS appliance.

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I'm more looking to build something myself. What would you recommend? – Naftuli Tzvi Kay Feb 3 '11 at 17:44

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