Ultra6 rebuild always ends with "complete" and then "Dead"

For anyone following along, the array is completely rebuilt now. I ended up taking drive 2 to work and analyzing it. It had one total bad sector on the entire surface. I rewrote that one sector manually with zero and then put the drive back into the readynas. The rebuild completed successfully while I slept last night.

I have now manually kicked off another readynas replicate job, so after this finishes (hopefully successfully without incident) and a full system backup of the ultra6 also finishes after that, I will likely write off the balance of the ultra6 warranty and attempt to graft os 6 into the ultra6 as described in another forum. I imagine this should allow me to continue to use readynas replicate beyond the 45 day trial. Worst case, the price of readynas replicate that I would be saving covers a big chunk of the cost of a RN516 enclosure if I decide to buy a second bare one of those instead (if my love of ecc ddr3 sdram ends up being stronger than my love of saving money).