Ok, you are using the SAS controller in pass-through  (non-RAID) mode. If your primary disk in Disk Management is non Dynamic, then you aren't using Windows to mirror either. Given both of the above, if you did not lose anything important when the other disk failed, but it was somehow making your setup redundant, then it was most likely only a backup disk, and the only way to copy the data back to it is to create another backup using whatever backup software you have.
On my Dell Server R210 one of my drives failed. Inside the Server I see a HDD0 and HDD1. I found out that HDD1 failed. I took the HDD1 out and replaced it with another Hard-Disk (I am positive that it is compatible) I booted up the server but it did not copy the information from HDD0. I downloaded OpenManage and I see two working Physical Disks. 1:4 and 1:5 (Both at a Ready State) Someone told me to do the HOT SPARE on the drop down list to mirror the drives, but, there are no options, I only see No Task Available  HELP!
Dell Server R210 SAS6/iR 1 Drive Failed HELP!