Why not get a Mac Mini Server and get some other benefits out of it like network home folders, permission management, ad integrations, etc? Its much more scalable and a better bang for the buck over time.
I think that RAID solution would be great in an environment with a little more meat on its bones. I am a big believer in getting infrastructure portion setup before just sticking storage on a network, kind know what I mean?
But what would you do with the Mac mini in terms of disk storage, backup, etc?
I'm considering a Mac mini for a server too, with the idea of making certain shares available, but obviously I'd have backup disks on the mini with CarbonCopyCloner handling nightly backups (which can email you if a backup fails, meaning a disc failed - I presume.) Screen sharing to manage it, etc. I'd even set my itunes library to be stored on it.
For disks, it could be as simple as a slew of FW800 disks daisy chained to each other.
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To note, I already have a new Mac mini - it's awesome - and I have a WesternDigital MyBook Thunderbolt Duo (2x3tb) unit, which I clone drive 1 to drive 2 nightly, and I also have a FW800 3tb disk that drive 1 gets cloned to, giving me 2 copies of my data. For now 3TB is plenty.
The only advantage I could see of getting another Mac mini as a server is that I could put it in my networking rack and clean up my desk space. I can't justify the Synology units though, because a lot of the options don't matter to me (I would never use their built in iTunes server, etc), and they're just expensive enough to where if you get the good units, it's cheaper to buy a Mac mini! The good thing about the synology is that with RAID you can have a much larger volume, but it creates a messy backup solution with USB drives, etc.
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