Chapter 8. U.2 Nvme Cache Drive Post-Installation Tasks; Recreating The Cache Raid 0 Volume - Nvidia DGX A100 Service Manual

Chapter 8.
This chapter describes the tasks that are typically needed after replacing a U.2 NVME drive or
upgrading from 4 to 8 drives.
8.1.

Recreating the Cache RAID 0 Volume

1. Power on the system and log in.
2. Confirm that all expected drives are visible.
sudo nvme list
$
Two boot drives and either four or eight cache drives should be visible, depending on how
many are installed in the system.
3. If the previously installed cache drives (which are capable of self-encryption) are locked
with an access key, then unlock them.
sudo nv-disk-encrypt disable
$
4. Re-create the cache volume and the
sudo nvsm start /systems/localhost/storage/volumes/md1/rebuild
$
5. Verify the volume rebuild status.
sudo nvsm show /systems/localhost/storage/volumes/md1
$
6. If the volume is to be locked with an access key, then re-enable drive encryption.
‣
To enter drive passwords yourself, issue the following.
sudo nv-disk-encrypt init -g
$
The software prompts you to enter a password for the vault, and then a password for
each eligible SED.
Passwords must consist of only upper-case letters, lower-case letters, digits, and/or
the following special-characters: ~ : @ % ^ + = _ ,
sudo nv-disk-encrypt lock
$
‣
To allow the encryption software to randomly generated the passwords, issue the
following.
sudo nv-disk-encrypt init -k <your-vault-password> -g -r
$
NVIDIA DGX A100 System
U.2 NVMe Cache Drive
Post-Installation Tasks
filesystem.
/raid
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