Not really too bad an implementation actually. Can always add a USB hub like the Sheevaplug. For business, wouldn't really need wifi. Would compare with the Netgear Stora, Biz?, and GoFlex. Add the Pogoplug Pro also if you use the internal sata. Time to do some hardware experiments! The quote "The CloudStor has an integrated Time Machine? server allowing multiple Mac computers to back up to the Time Machine server" might be an interest for noobs.

That's what I keep telling Moriarty but he never believes me.

For the setup program, For me, it's called the shell console, fdisk, and mke2fs -j. I am assuming that the OS is still kept in nand and not a bootloader HD combination, so the included HD is strictly for data. I am also assuming that like other linux based NAS, unlike the WHS ones, that the internal disk is Ext2/Ext3 formatted (yes I missed that when I was skimming above on my first submit). I agree with you that adding a hard drive and the usb port is enough for most people, and can even use a hub like the sheevaplug guys. Personally, I wish they added an esata port with port multiplier capability. This from a guy with a Pro Liant server with 3 port multipliers and 30 Tbytes of storage. Still thinking about the internal Sata port on the Pro. I don't think it will be too hard to add power, now, how to double the RAM? Could do like the NSLU2 guys who made a "fat slug", I could make the pro, a "fat plug" (256 MB).

So woof, that's my dog imitation, woof woof, that's my other dog imitation.

And a large user community http://buffalo.nas-central.org especially http://buffalo.nas-central.org/wiki/Ipkg_on_the_Linkstation_(for_end-users)
Which is I believe, why they have the Time Machine capabilities. You're right, very interesting.

Update:
After thinking some more about this, it is smart for Buffalo Technology to offload cloud management to Cloud Engines. They are mostly a hardware manufacturer and projections from their marketing department might show no profit gains and maybe some drain on resources running their own cloud portal to their machines. They may eventually fold that over to Cloud Engines completely. Cloud Engines seems to emphasize "the Cloud" more, as their name implies as the emphasis with their business. In essence, their business model is, you buy the hardware and we will provide a portal to your cloud, which is probably more cost effective in some ways than other companies that offer a cloud on their own systems (multiple virtual servers on real servers). So their own server requirements are only providing a portal to the part of the cloud that a customer has purchased. Should they wish, in the future, they can provide ways to increase their revenue such as advertising on customer's web portals or even offer services such as distributed computing (virtual supercomputer) with customer's permissions like set@home only with some renumeration.

Update:
May have underestimated the Cloudstor, If it has a similar chip (PLX 7821) as the Pogoplug Pro (PLX 7820), would be awesome. Would have more processing power and features than any other plug/arm (kirkwood) combination. Will have to wait and see.