Hi everyone, I recently had my one drive change from sdh to sdi without any physical changes being made to the server. The server is a separate area of the house which secured away from everyone so there was no chance of it being messed with or bumped/moved as it is in a 24U Dell Rack.

 

My drive was originally sdh. Then I noticed a notification stating the drive has been changed to sdi. The drive in the array is now showing as disabled and emulated. I am able to access all the files from the emulated drive. 

 

The original drive which is now sdi is listed in the unassigned devices section. I am able to mount the drive and access all the files. 

 

I don't know why it changed from sdh to sdi. Even with the drive being changed from sdh to sdi in unraid, I thought the array would notice the serial number and still work. the drive label is still the same serial number it was as it's based on the actual drive serial number. 

 

I am currently rsyncing the data from the emulated drive to another drive in the array as a backup. 

 

This happened to me on Friday and did not notice the drive would not mount. I attempted to rebuild the drive and commenced to rebuild an unmountable drive and lost all the data that was on the drive. 

 

I was able to get almost 25% of the data back from other sources before it happened again. So, I am copying all the data to another drive to be safe when I attempt to rebuild the drive again. 

 

I have another drive on the way, as I am going to rebuild to a brand new drive. 

 

Then I will preclear the old drive as a way to test the drive that is suspect. If it is proven to be faulty, I will go the warranty route since the drive is only 2 months old and has a 5 year warranty since I registered it when I received it back in February.

 

Does anyone know why the drive would have changed from sdh to sdi without actually being disconnected and then reconnected?

 

Thanks.

Post diagnostics when the drive is showing unassigned. Seems you drive dropped off and hence the drive letters for remaining drives changed. The cause of original drop off is what we need

 

Drive letters are not important to unraid, it identifies drives by name and serial number. /dev/sdX are linux assigned names and not guaranteed to remain same, so if you want to specifically address drives for any use case (like VM pass through), you should use by-id instead