No, we have about 1 GB of data to backup everyday; the hard drives are much larger than that!
Our community system is a distributed platform, meaning we have multiple servers that do multiple but different tasks to present you the page you're seeing. This means we can handle heavy traffic without as much difficulty, but it does mean it's a little harder to troubleshoot things when we're seeing a slowdown on the page.
We had a blurp this morning while trying to fix some code which caused a slowdown for about 10 minutes. We try not to make things worse, but sometimes we inadvertently do!