Problem: A new 6TB WD Red drive shows in Disk Status as good but is inaccessible. The disk LED status shows solid red.
Background: I bought a PR4100 and installed a 6TB WD Red drive into slot 2 and physically transferred a 4TB WD Red drive from a My Cloud device into slot 1. I successfully set the 4TB drive to roaming and all data are accessible. The LED light is solid blue about six hours after installation. RAID appears to be set to JBOD, which is what I believe that I want. It’s as if the 6TB drive doesn’t exist.
My desired solution is one where I can access and use the drive as additional storage to the 4TB for a total of 10TB. I do not want to do anything that will erase data on my 4TB drive.