Problems with NAS / Digitus and 2 WD's

Hello all,

Last week my NAS-system from Digitus NA-7024 give a error message [HDD2] faulty !!

What I did is , remove the HDD2 - WD5000AAKS and send it to WD, bought another one

from the same model and placed it in the NAS system.

The problem now is that the NAS system don’t recognize the disk , some one any idea ?

All idea’s welcome, because I’m totally lost ;-(

Best regards, Frank