what is the best unit for a NAS audio backup, does LaCie provide that, or do I need to look to another company?

I have a Macbook Pro and use the LaCie 1 T backup, but it cannot be used as a NAS. What are the recommendations for a good 1-2 T NAS unit, to store my music on?

LaCie Little Big Disk Thunderbolt Series Hard Drive

LaCie Little Big Disk Thunderbolt Series Hard Drive

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