One of my drives in my RAID died, so I went and bought a 3TB drive for a replacement. The RAID is only 1T, so I'll use the rest of it for something else.
It drives me nuts that every site out there describes in great detail how to do different things. Anyone can read the man page, or issue the parted "help mkpart" for example; but what I usually look for is a quick start. So, here's a quick rundown on how I re-set up the RAID drive. At the bottom is a full rundown on how I think I originally setup the RAID, but don't quote me on it. 😀
We run through the basic use of parted and mdadm.