So while folks who really do need to reliably store 500GB of stuff might still be looking at RAID, for the 'average' end-user they have a far better solution than complicated multi-disk setups.
So while folks who really do need to reliably store 500GB of stuff might still be looking at RAID, for the 'average' end-user they have a far better solution than complicated multi-disk setups.
Imagine a typical American or Canadian "broadband" consumer internet connection with 10Mbps down and 1Mbps up. If you keep your computer on 8 hours a day, it will take just over 9 months to upload 1TB of data to the cloud at that speed. A multi-TB RAID array would take years to back up. (This is why I think Backblaze et al. can afford to offer "unlimited backup" for a flat monthly fee. The customer's ISP is doing all the limiting for them!)
It was a major PITA when I first started using online backup services while in Canada. (TekSavvy FTW!) Despite paying for one of their faster plans, I had to keep my computer on for a couple of weeks 24/7 to make the initial backup.
'YOUR PHOTOS BACKED UP TO CLOUD WHILE U WAIT'
As soon as you get home you can access your backup (transparently) from the mall node. Then when the drive gets back to base it does another verification run and instructs the node that it can re-use that space.
What's also fun: USB speeds. I found a transfer time calculator - http://techinternets.com/copy_calc - and, well, 4 terabytes at USB 2.0 speeds (480 mb/s) would take over 21 hours, or 3 hours at USB 3.0 speeds. Those are at optimal wire speeds, less 10% for overhead.