Hello Matt, It is important to mention that is possible to restore a RAID 1 by setting the disks to non raid and no information will be lost; however, I regret to say that on RAID 5 there is no way to restore the data if the structure fails.
Your RAID is giving you the status as “Failed”. That means that there is no structure available on it, so it will be necessary to create the array from scratch.
I would also recommend you contacting the computer manufacturer for them to provide any other option or tool from their side to save the information.