Replacing a failed Physical Disk that is part of a Non-Redundant Virtual Disk
If the failed physical disk is part of a non-redundant virtual disk (such as RAID 0), then the failure of a single physical disk causes the entire virtual disk to fail. To proceed, you need to verify when a backup was taken, and if there is any new data that has been written to the virtual disk since that time.
If you have backed up recently and there is no new data on the disks that would be missed, you can restore from backup.