Thanks Brent for your hard work. There was an article in PC world some time back about hard drives and their failure rates. Some seemed to have high ones and others went for long times, but they will eventually fail. That is why everything in the ESS computers for the telephone companies is backed up with two processors and two complete sets of memory and storage. If one crashes the other comes on line and runs everything until the bad one can be repaired. But that is a very expensive option and one that only major companies would likely use.
Ron