[HELP] Backup Failing

[honeysuper]

Hi. I have a brand new four-node Proxmox cluster up and running. I've configured a CEPH pool called "StandardStorage" (3:2) where the two VMs are stored.

The target for the backup is called PLFS2Storage, an NFS mount.

Running "Backup" from the node -> Virtual Machine page fails because it can't find the StandardStorage CEPH pool:

INFO: starting new backup job: vzdump 101 --compress zstd --remove 0 --mode snapshot --storage PLFS2Storage --notification-mode auto --notes-template '{{cluster}}, {{guestname}}, {{node}}, {{vmid}}' --node n100
INFO: Starting Backup of VM 101 (qemu)
INFO: Backup started at 2024-05-29 10:51:56
INFO: status = running
INFO: VM Name: HomeAssistant
INFO: include disk 'scsi0' 'StandardStorage:vm-101-disk-1' 32G
INFO: include disk 'efidisk0' 'StandardStorage:vm-101-disk-0' 128K
ERROR: Backup of VM 101 failed - storage 'StandardStorage' does not exist
INFO: Failed at 2024-05-29 10:51:56
INFO: Backup job finished with errors
INFO: notified via target `mail-to-root`
TASK ERROR: job errors

The CEPH pool is not contained in /etc/pve/storage.cfg (which seems strange?)

# cat /etc/pve/storage.cfg
dir: local
        path /var/lib/vz
        content vztmpl,backup,iso


lvmthin: local-lvm
        thinpool data
        vgname pve
        content rootdir,images


nfs: ISO
        export /sectank/proxmox
        path /mnt/pve/ISO
        server 10.129.1.7
        content iso
        prune-backups keep-all=1


esxi: H10-129-16-50
        server 10.129.16.50
        username root
        content import
        skip-cert-verification 1


esxi: H10-129-16-51
        server 10.129.16.51
        username root
        content import
        skip-cert-verification 1


esxi: H10-128-50-48
        server 10.128.50.48
        username root
        content import
        skip-cert-verification 1


nfs: PLFS2Storage
        export /sectank/proxmox
        path /mnt/pve/PLFS2Storage
        server 10.129.1.7
        content images,backup,snippets,vztmpl,rootdir
        max-protected-backups -1
        prune-backups keep-all=1

Any thoughts?