Where does your data reside? I mean, physically?

We always seem to be concerned about others hacking into our data, compromising our secret, sensitive information. But, what about the actual physical security of those bits & bytes?

In reality, this seems like more of a concern to me, and my everyday dealings with tons of data. At my desk, I am concerned about backing up my critical data that is being created at this moment. Therefore, I work solely from a redundant system similar to a RAID 5 system of hard drives.

With this system, I need not be concerned about a hard drive failure, and whether or not I have backed up my recently, or even not too recently, created work. The system consists of four standard hard drives, that share the data load. At any time, any one of them can fail and I will not even notice an interruption in my work. My overall capacity may be reduced, but the system rebuilds my data as I continue to work without any interruption.