readynas duo v2 disk failed ..

Hi guys I appreciate the prompt and informative reply's. It is v1, it doesn't have the v2/Duo on the front sadly. I forgot to mention id already powered it down because i wasnt sure if it was hot swappable or not. I took the drives out in the hope i could read them. Ive inserted the good drive, rebooted and can now see the files on it, which is a start. As advised im going to backup the more important files etc  before i insert the replacement drive.

Excellent information btw Sandshark, although I'm reasonably tech savvy i didnt know about the differences between SMR/CMR, and the rest of your explanation is very clear, something you don't always get, but you never stop learning in this game !

many thanks to both of you. Ill update when I've backed up and inserted the replacement drive.

glenn