Trixbox - DMRaid broken any ideas how to fix?

Hi Everyone,

I have to admit I normally use hardware 3Ware or Areca cards and I'm a bit lost on how to deal with this. "dmraid -r" shows this:
[trixbox1.localdomain /]# dmraid -r
/dev/sda: ddf1, ".ddf1_disks", GROUP, ok, 155987856 sectors, data@ 0
/dev/sdb: ddf1, ".ddf1_disks", GROUP, broken, 155987856 sectors, data@ 0

Any ideas how to fix this? The disk looks OK.