DGX-2 System DU-09224-001 _v09|13
Chapter5. U.2 NVMe Cache Drive
Post-Installation Tasks
This chapter describes the tasks that are typically needed after replacing a U.2 NVME drive or
upgrading from 8 to 16 drives.
5.1. Recreating the Cache RAID 0 Volume
1. Stop cachefilesd.
$ sudo systemctl stop cachefilesd
2. Umount /raid and stop raid-0.
$ sudo umount –f /raid
$ sudo mdadm –-stop /dev/md1
3. Run the script to rebuild the RAID volume.
$ sudo /usr/bin/configure_raid_array.py –c –f
Press Y at any questions.
4. When completed, confirm that the /raid volume is mounted.
$ df -hl /raid
The /dev/md1 filesystem should be mounted on /raid with size 28 TB or 56 TB,
depending on whether 8 or 16 drives are installed.
5.2. Confirming the Volume is Ready
1. Confirm the storage devices and volumes in the system are healthy using the following
command.
$ sudo nvsm show systems/localhost/storage/volumes/md1
2. Verify Status_Health=OK and that the numbers of drives listed in Drives = is as
expected.
3. Confirm that the drives are now available.
$ sudo mdadm -D /dev/md1
If the drive manufacturer is Micron, perform the steps in Enabling the Temperature Sensor.
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