Convert the disk to dynamic disk shut doWn and restart the server
Backup the data on the stripe volume and delete the stripe volume. Create a raidS volume on the four disks, restore the data to the new raid5 volume
Backup the data on the stripe volume and delete the stripe volume. Create a mirror volume, shut down and restart the server. Restore the data to new mirror volumes
Backup the data on the stripe volume and delete the stripe