A failed RAID array can be a nightmare to overcome, especially if it is propriatory. All might appear lost, but not necessarily, there are a few things we can do.
Read more … Recover a failed Adaptec Array
Read more … Exchange Server 2010 Event ID's 2601, 2604 and 2501
If you've opted for a Linux RAID setup for booting your OS, then ensuring you've made provision for grub in the mbr is crucial!
Read more … Copying grub to your other hard disks (eg for RAID setup)