Help, My book duo cannot read!

I have an 8TB book dou, today I do not know what happen to my book duo. I was downloading some data to the first HD driver (I used the JBOD mode for my book duo), but the download was failed. And the HD driver did not respond. I tried to reboot my computer and reconnect the driver, which had a dialog showing that a problem to RAID. So I cannot read my data now. How do I do?
I have 3TB data in the first HDD, I do not want to format it. HELP!!!

Hello,

It is possible the partition got corrupted.

I recommend you try using a data recovery software in order to recover your files and then format the drive in order to use it again.

Thank for reply me. Would you describe more detail. What software should I use? I do not want to format the drive that has 7TB data in the drivers.

Now, I cannot initialize the first driver.