Non-unique disks warning on UGREEN DXP2800

TrueNAS General
1

Hello, hoping to get some clarity as to this issue.
I have a brand new DXP2800 2-bay NAS.
In this NAS I have two 14TB WD Red Pro HDDs (unique serials), and two 1TB Evo Plus SSDs. There’s also the built-in/soldered 35GB eMMC with the UGOS on it.

I installed latest TrueNAS (25.04.01) on it (on one of the SSDs), all went fine, but when I’m about to create my first storage pool, I get the non-unique disks warning in yellow font:

“Warning: There are 2 disks available that have non-unique serial numbers. Non-unique serial numbers can be caused by a cabling issue and adding such disks to a pool can result in lost data.”

I have to click on “allow non-unique” checkbox to proceed. Not sure why this warning shows up… none of the drives have unique serial numbers… so I was wondering how this warning is getting triggered?

TIA

2

I think I know more of less where the issues are coming from…

I had removed one SSD and one HDD, and once I selected “Allow” it showed two 4Mb boot partitions from the eMMC (mmcblk0boot0 and mmcblk0boot1).
I think these are what are causing the warning. Looking at then via the linux root CLI, looks like they have no serial. So seems like the TrueNAS code is seeing “two disks” with “no serials” as “two disks with non-unique serials” and throwing the warning.

I’m a noob still at TrueNAS, but happy to provide more info, if we think this is a bug or whatnot.