You should not just take any chances if you are depending on the data stored in one of the disks of a RAID array. This data could be permanently deleted if the device is not repaired properly. However, RAID recovery is not something that anybody can do well. Even some maintenance technicians are not skilled when it comes to this. You have to exert some effort to find a RAID recovery service that will attend to your problem and be able to come out with your data in hand.
There are actually numerous good firms that provide RAID recovery services, like this one. But you have to understand that these firms differ from each other. The level of competence of one firm has may not be the same as another. You should not rush into hiring the first firm that you find because you won’t necessarily get the best. Remember that a RAID device is fairly delicate; the damage on the device can become more extensive if it is not treated properly.