dude, the Cloud is coming. I used to run more machines at home but then had to support them.
I actually DON'T CARE about the device storing my data. You're thinking very small and non-scalable - I'm thinking that iDrive uses NetApp or some other scalable and fault-tolerant storage system with lots of flashing lights - this allows them to ramp up your account easily.
My Internet connection is 20Mbps. But I am not using iDrive for accessing files but rather allowing me to backup and restore from the Cloud if shït happenz. Aiii.
I use Norton Ghost, backing up onto a 1TB USB Hard Drive.
One time, I'd literally just finished the backup of my laptop, when the drive died. Popped a new drive in. Restored the laptop to factory settings, recovered the backup onto the new drive. Wonderful!
They are here already as it's dark, cold and gloomy outside
Point taken.
I use http://www.goodsync.com/ meets my current needs fine.
I achieved the same when my HDD went titsup. Acronis True Image was my saviour. Restored to the new disk over the network in 20 minutes