Mounting unmounted nvme drive

New Lambda Hyperplane arrived. Two NVME drives (2TB OS, 15TB data), only OS drive is mounted. I can find a way to mount this but would appreciate if Lambda has a recommended step-by-step procedure on how to do it.

rowel@lambda3-hyperplane:/etc$ df -kh
Filesystem Size Used Avail Use% Mounted on
udev 504G 0 504G 0% /dev
tmpfs 101G 59M 101G 1% /run
/dev/nvme0n1p2 1.8T 17G 1.7T 2% /
tmpfs 504G 0 504G 0% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 504G 0 504G 0% /sys/fs/cgroup
/dev/nvme0n1p1 511M 7.9M 504M 2% /boot/efi
tmpfs 101G 0 101G 0% /run/user/1001

rowel@lambda3-hyperplane:/etc$ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
nvme0n1 259:0 0 1.8T 0 disk
├─nvme0n1p1 259:1 0 512M 0 part /boot/efi
└─nvme0n1p2 259:2 0 1.8T 0 part /
nvme1n1 259:3 0 14T 0 disk

rowel@lambda3-hyperplane:/etc$ cat fstab
UUID=4f5a69a5-db8e-44a9-bb4b-5b515bac4cb9 / ext4 errors=remount-ro 0 1
UUID=F57B-4141 /boot/efi vfat umask=0077 0 1
/swapfile none swap sw 0 0