I think you will build a NAS (network attached storage) . You can use nearly every distribution. I would prefer a small one, without X and so on..Have a look at
http://www.linuxlinks.com/Distributi...Distributions/ for small distributions. I think SNAP is a Feature from some NAS boxes which allows you to make Snapshots from your Data..
The smaller the faster, because you donīt need to run unnecessary progs.
Maybe you can get a uses Sun SPARC System running Solaris.
Hope it helps a little
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