WD1002FBYS problem?

Three 1T RE3 WD1002FBYS were failed in Raid5, after disassembly the Raid5, and test individually, the firmware and S.M.R.T information are difference, and the reading performance are obviously difference also, the S.N show all disk are still in WD’s quality guarantee!

What’s wrong with the black RE disk?

I’m sorry to hear that you are having problems with your WD drives. Even though the firmware version might vary, as long as the model number is the same between hard drives, the performance should be the same. Check the link below so you can test your hard drives using our DLG utility.

How to test a drive for problems using Data Lifeguard Diagnostics for Windows 


If the DLG test you may create the RMA replacement number following the instructions from the following link. 

How to get an RMA, (Return Merchandise Authorization) or replace a defective product under warranty 


I already known the reason, and return all five RE3 disk to reseller,and have get part of money back.