Doh my bad. I had a major disk crash. I had years of work on a 1 TB raid 10 array. One of the striped drives failed and when I tried to rebuild from the other stripe the unit scrambled its meta data and corrupted the other half of the mirror and I ended up losing everything!
I kind of forgot about things after that.
I will get to that video later tonight.
"If I have seen further it is by standing on the shoulders of giants." Sir Isaac Newton, 1675