Well, updated the firmware of the storage card and still failed to see the datastore. Next thought is that the firmware of the controllers on the datastore are so out of date that nothing newer will work with it. Looks like I am on the latest version of ESXi that will work with this datastore.
So now the plan is to roll back the one host back to the same version of ESXi as the other 2 hosts so that it can see the datastore again and bring it back into production. We are planning on replacing the datastore next year to continue staying up to date.