Jeremy Zawodny just suffered from a hardware RAID corruption and has decided to go back to software RAID.
I switched my home server to using a hardware RAID not too long ago, and am very happy with it, and I have promised myself that I would switch mother from using a software RAID over to a hardware RAID eventually.
I regularly check the health of my RAIDs manually, althou I suppose I should set up automatic checking so if any of the RAIDs go into degraded mode I get an email notification or something.
Just like Jeremy, I have rsnapshot nicely set up and making backup of mother from my home server every four hours. Highly recommended.