So, I'm not sure what happened with the drive. I yanked it on Monday and checked the SMART data with a few programs. Each told me the drive was in perfect shape and there is no reported issues. I fired up HDTune and started a full platter scan. It finished 5 hours later with absolutely zero errors. I was a bit confused, I just put it under a fair amount of stress. So, still trying to figure out what is wring, I fired up IOMeter, added a 4kb read (100%random) test to the list and fired it up. I let it run for a minute and started the HDTune test again. This ran for over 8 hours of pure thrashing and reported no errors. I pulled the server out of the rack, reseated the cables and dropped the drive back in. I restarted the server, got into the RAID card's BIOS, added the "failed" Hitachi as a global hot spare and forced my normal hot spare offline. This forced it to rebuilt on the "failed" drive. I restarted the server while it was doing the rebuild and got the OS back up. The rebuild ran for ~6 hours and finished successfully. I'm really hoping it was just a fluke or a cable.