Raid 0? That's just striping without any redundancy, if that's dead, you better have backups, because data recovery from dead drives is 1 chancy, and 2 pricey. Using Raid1 (mirroring) or Raid3/5 (striping with parity) would have allowed the loss of 1 drive with no loss of data, at the cost of 1 extra disk (plus controller). For the rest, I can't help you.