Solution: update firmware on Nvme disk (General DC NVMe PM9A3) [IMAGE]  
Initially, we had a Dell 750 server with 15 SSD disks and 8 NVMe disks. Upon the first start, the NVMe slots in the Dell R750 showed NVMe physical disks in the IDRAC. Additionally, the storage overview displayed both the SSD and NVMe disks on the dynamic picture. However, after some manipulations, we can now only see the SSD disks and the NVMe disk write is not accessible. How can we return the Dell 750 to its initial state so that we can see all disks in the storage overview? I followed this instructions but it didn't solve the issue: 1. Reset the system: If the above steps do not work, you can try resetting the system to its default settings. To do this, turn off the server and unplug it from the power source. Remove all of the disks and wait for a few minutes before plugging the server back in. Insert the disks back into their respective bays and turn on the server. This should reset the system to its initial state and allow you to see all disks in the storage overview. 2. Reset iDRAC to its initial state  [IMAGE] [IMAGE]
Dell 750 server with 15 SSD disks and 8 NVMe disks