Advanced Installation Options (Encrypted Root - Dgx Os 5 Or Later) - Nvidia DGX A100 User Manual

default selection is Install DGX Software. The installation process then repartitions all the
SSDs, including the OS SSD as well as the RAID SSDs, and the RAID array is mounted as /raid.
This overwrites any data or file systems that may exist on the OS disk as well as the RAID
disks.
Since the RAID array on the DGX A100 system is intended to be used as a cache and not for
long- term data storage, this should not be disruptive. However, if you are an advanced user
and have set up the disks for a non-cache purpose and want to keep the data on those drives,
then select the Install DGX Server without formatting RAID option at the boot menu during the
boot installation. This option retains data on the RAID disks and performs the following:
Installs the cache daemon but leaves it disabled by commenting out the RUN=yes line in

/etc/ default/cachefilesd entry.
Creates a /raid directory, leaves it out of the file system table by commenting out the

containing /raid in /etc/fstab.
Does not format the RAID disks.

When the installation is completed, you can repeat any configurations steps that you had
performed to use the RAID disks as other than cache disks.
You can always choose to use the RAID disks as cache disks later by enabling cachefilesd and
adding /raid to the file system table as follows:
Uncomment the #RUN=yes line in /etc/default/cachefiled.
1.
Uncomment the /raid line in etc/fstab.
2.
Run the following:
3.
Mount /raid.
a).
$ sudo mount /raid
Start the cache daemon.
b).
$ systemctl start cachefilesd
These changes are preserved across system reboots.
9.2.5.2
DGX OS 5 or later)
Selecting this menu item provides the ability to encrypt the root filesystem of the DGX. It
should normally only be selected if this is desired.
Selecting Encrypted Root instructs the installer to encrypt the root filesystem. The encryption
is fully automated, and users will be required to manually unlock the root partition by entering
a passphrase at the console (either through a direct keyboard and mouse connection or
through the BMC) every time the system boots. During the First Boot process (see "First Boot
Setup" ), you are provided the opportunity to create your passphrase for the drive. The
passphrase can be changed later if needed.
DGX A100 System
Advanced Installation Options (Encrypted Root -
Updating and Restoring the Software
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