By configuring RAID1, I figured if one of two disks failed, the data would still be there.
When disk 1 failed, it dropped offline. I tried power cycling it to see if this was an intermittent problem and it never gets past Error light blinking six time every 15 seconds or so.
This tells me RAID1 is not RAID1 here. Data and Operating System should be on both disks.
I'm about ready to throw Buffalo away and buy something other than Buffalo.