What is the crowd's opinion of cwrsync?

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cwrsync checking in. Big upvote for Synology also, I don't think you'll find a cheaper NFS server right out of the box.

I'd also like to bring up Crashplan. Encrypted volumes on each end, the ability to handle near continuous data protection, and versatility to literally add any sort of storage. It's far from perfect but for the price and versatility, I can handle the babysitting it requires.