E30 Error on 6 Tb Pro Duo

[tpalmer0127]

I'm getting an E30 error on a 6.0 Tb Pro Duo  LS-WV6.0TL/R1. And when I power it up I get and E14 for a while before it changes to and E30.   I've tried to run check disk, but with the red error light flashing, it doesn't seem to be working.  From the response of the device and reading other posts, it looks like one of the disks is going bad.  How do I determine which of the two 3.0 Tb drives is bad ?

[davo]

Check on he system storage section of the GUI, under the disk section it will say which disk has an error.

[tpalmer0127]

Thanks for the answer.  I had looked at that screen and didn't see any errors.  Buffalo support suggested re-formatting the drives.  I've done that and am reloading data.  Hopefully this issues was resolved in the re-format.