I think it's a sweat idea to RMA the drives if you can, I know I would. So I do hope I have a few failures before the warranty expires on my drives, just not all at the same time. It costs a lot to replace six drives. Honestly I might rethink my pool by then as I don't currently feel I need as much space as what I have, I think I could drop down to five 2TB drives and be happy, I just want to retain RAIDZ2 format.