RAID 1 array degraded; no option to rebuild

I have a PowerEdge T110 server with a PERC S100 RAID controller (firmware/"fake" RAID).  Unfortunately, I had a small accident tonight while I was working on that machine.  While attempting to clean up a cable mess, I accidentally yanked on the wrong cable and unplugged the power for the server.

While the server was running through POST, it paused and stated that the RAID 1 array was degraded.  By entering the S100 configuration, it tells me that drive 0 is degraded, and the other one is fine.  The server boots just fine.

I opened the OpenManage utility which displays the status of the virtual disk to be degraded as well.  However, despite displaying the status as being degraded, absolutely nowhere does it list any option to rebuild the array.  I can't even check for the consistency.  Under the drop-down list for "tasks," the only available options are:

1. Delete
2. Assign/Unassign Dedicated Hot Spare
3. Rename

That's all.  Obviously, I don't want to do any of those.  The configuration utility in the BIOS also seems useless.  Although it lists the specific physical disk that is degraded, I cannot see any option for rebuilding the array consistency.  Since the physical disk has not failed and is not actually damaged, I don't need or want to replace it.

So, why isn't any rebuild option listed, and how can I rebuild this array without deleting the entire volume and restoring from a backup?