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Restoring the DGX-2 Software Image

DGX-2 System User Guide

After the installation is completed, the system then reboots into the OS.

Refer to Setting Up the DGX-2 System

for the steps to take when booting up the DGX-2

System for the first time after a fresh installation.

RETAINING THE RAID PARTITION WHILE

INSTALLING THE OS

The re-imaging process creates a fresh installation of the DGX OS. During the OS

installation or re-image process, you are presented with a boot menu when booting the

installer image. The 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-2 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.

 Creates a /raid directory, leaves it out of the file system table by commenting out the

entry 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 at a later time by

enabling

cachefilesd and adding /raid to the file system table as follows:

1. Uncomment the #RUN=yes line in /etc/default/cachefiled.

2. Uncomment the /raid line in etc/fstab.

3. Run the following:

a) Mount /raid.

sudo mount /raid

b) Start the cache daemon.

Nvidia DGX-2 SYSTEM User Manual

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