Today I replaced an Array Drive, as I have done many times before, and something strange happened. Here is my setup. I had a 5TB for parity 1, a 5TB for Parity 2, and only one Array disk in the array and it was a 4TB. I replaced the 4TB with a 5TB and powered on the machine. I assigned the new Array drive and checked the box to rebuild the drive. When I have done this in the past unRAID has allowed me to keep using the Array and view all my files during the rebuild process. This time I noticed that unRAID wasn't showing any data in my Array. So I figured since I started the rebuild I might as well wait and see what happened when it finished. It finished and still no data. Fortunately I did not reformat my old disk 1 so I am using unassigned disks and krusader to copy all the data to the array again. All I have mentioned I have done drive swaps plenty of times, exactly the same way, with no issue. This is really bothering me because what if I would have been replacing a bad drive? Currently I have no redundancy while i am waiting for my copy to finish and that really bothers me too. Did unRAID choke or what happened?

Did you do a preclear of your drive before installing it into your system?

If you can provide diagnostics that include the period during which you attempted the disk replacement someone will take a look and will probably be able to advise, otherwise it would simply be guesswork.

 

https://lime-technology.com/forum/index.php?topic=39257.0

 

No I did not pre clear before I put it in.

 

I already rebooted and before I got the diagnostics...dang.