My Book Duo user manual

Does a user manual exist for WD My Book Duo? I spent several days trying to repair my RAID 1 by trial and error. Some posts helped others made things worse. Eventually I fixed it after WD Drive Utility told me to replace a drive, then proceeded to slowly rebuild that drive, copying all those zeros from the erased drive. I was working blind and still don’t understand what the front LEDs signify other than blue = good.
Can I trust that repaired drive?

Hi @Spagatz1,

Have you opened a Support Case? If not opened, for more information, please contact the WD Technical Support team for the best assistance and troubleshooting: