U.2 NVMe Cache Drive Post-Installation Tasks#

This section describes the tasks that you typically need to perform after replacing a U.2 NVMe drive.

Re-creating the RAID Array#

Power on the system and log in.

Confirm that all installed drives are visible by using the nvme command:

sudo nvme list

The output can indicate two boot drives and eight cache drives, depending on how many are installed in the system.

Example Output

Node             SN                   Model                                    Namespace Usage                      Format           FW Rev
---------------- -------------------- ---------------------------------------- --------- -------------------------- ---------------- --------
/dev/nvme0n1     S4YPNE0N200093       SAMSUNG MZWLJ3T8HBLS-00007               1           3.84  TB /   3.84  TB    512   B +  0 B   EPK9CB5Q
/dev/nvme1n1     S4YPNE0N200040       SAMSUNG MZWLJ3T8HBLS-00007               1           3.84  TB /   3.84  TB    512   B +  0 B   EPK9CB5Q
/dev/nvme2n1     S436NA0N106764       SAMSUNG MZ1LB1T9HALS-00007               1          44.44  GB /   1.92  TB    512   B +  0 B   EDA7602Q
/dev/nvme3n1     S436NA0N106850       SAMSUNG MZ1LB1T9HALS-00007               1          45.18  GB /   1.92  TB    512   B +  0 B   EDA7602Q
...

If the cache volume was encrypted with an access key, disable the encryption before re-creating the RAID volume:
```
sudo nv-disk-encrypt disable
```
The disk encryption packages must be installed on the system. For more information, refer to the Managing Self-Encrypting Drives topic in the NVIDIA DGX OS 6 User Guide.
Re-create the cache volume and the /raid filesystem:
```
configure_raid_array.py -c -f
```
At the prompt, enter y to confirm the rebuild action.
(Optional) To encrypt the volume with an access key, refer to the Managing Self-Encrypting Drives topic in the NVIDIA DGX OS 6 User Guide.
Confirm the volume is healthy:
```
sudo nvsm show volumes
```

Send the old drive to NVIDIA Enterprise Support using the packaging from the new drive.