I have had a RN102 with a 3TB Segate drive working happily for several years. I recently added a 3TB WD Red drive, so that I have redundancy protection. ON power up, it starts to synchronise but will always say 'Volume Degraded' at the end!
I have swapped the drives around, to prove that both bays are OK, but the system doen't seem to like the new WD drive.
I have down loaded the log, but I'm not sure what to look for.
That is IF he has a backup! Not sure why you would have a NAS for awhile with a single HDD. You have zero protection. What's the point? Glad to see that he is finally adding that second HDD, which gives you Raid 1. Which is bascially a clone/Mirrored of 1 HDD to the other HDD.
I have 4 3TB WD Red drives and 2 3TB Seagate NAS drives in my 516 NAS. In fact the 4 WD RED's used to be in my old ReadyNAS NV+ V2 NAS. It doens't seem to me to be a good idea to pull out both HDD and swap in some type of failed conndition. When you install a new HDD, it has to format and index the thing which can take HOURS. I don't know how old your Orignal HDD is. I've had issues with Seagate drives. Not holding up and lasting. When the NAS has to copy and rebuild, it puts extra stress on the drives still in the system. So you may be getting this error, but it's not from the new HDD, but the orignal HDD.
YA, that was one of my guesses. A bad Seagate drive. They just don't tend to last. Also when you pop in a new drive and the NAS has to do a rebuild, that puts extra stress on the other HDD(s). That tends to be the time a HDD is going to fail on you. Which is one reason why you should have a backup. At least the 3TB drives are reasonably priced. Though HDD prices arn't dropping down fast enough.
