Also, I strongly recommend setting up mdadm in daemon mode to send you an email on failure as you can go days or weeks without noticing a degraded array. It's r

Also, I strongly recommend setting up mdadm in daemon mode to send you an email on failure as you can go days or weeks without noticing a degraded array. It's really easy to set up in most distros, so do it now (and don't forget to test it).