Ensure SVM is enabled for SMB. Follow ONTAP 9 documentation for more information.

Have at least two lifs per controller. Follow the steps from the above link. For reference, here is a screenshot of lifs used in this solution.

Use Active Directory or workgroup based authentication. Follow the steps from the above link.

Create a volume. Remember to check the option to distribute data across the cluster to use FlexGroup.

Create an SMB share and adjust permissions. Follow ONTAP 9 documentation for more information.

Provide the SMB server, Share name and credential to the virtualization admin for them to complete the task.

Collect the SMB server, share name and credentials to use for the share authentication.

Ensure at least two interface are configured in different VLANs (for fault tolerance) and NIC supports RSS.

If using Management UI https:<proxmox-node>:8006, click on datacenter, select storage, click Add and select SMB/CIFS.

Fill in the details and the share name should auto populate. Ensure all content is selected. Click Add.

To enable multichannel option, go to shell on any one of the nodes on the cluster and type pvesm set pvesmb01 --options multichannel,max_channels=4

Here is the content in /etc/pve/storage.cfg for the above tasks.

Ensure SVM is enabled for NFS. Refer to ONTAP 9 documentation

Have at least two lifs per controller. Follow the steps from the above link. For reference, here is the screenshot of lifs that we use in our lab.

Create or update NFS export policy providing access to Proxmox VE host IP addresses or subnet. Refer to Export policy creation and Add rule to an export policy.

Create a volume. Remember to check the option to distribute data across the cluster to use FlexGroup.

Assign export policy to volume

Notify virtualization admin that NFS volume is ready.

Ensure at least two interface is configured in different VLANs (for fault tolerance). Use NIC bonding.

If using Management UI https:<proxmox-node>:8006, click on datacenter, select storage, click Add and select NFS.

Fill in the details, After providing the server info, the NFS exports should populate and pick from the list. Remember to select the content options.

For session trunking, on every Proxmox VE hosts, update the /etc/fstab file to mount the same NFS export using different lif address along with max_connect and NFS version option.

Here is the content in /etc/pve/storage.cfg for NFS.

Make sure two linux bridges each on its own ethernet nic is configured (ideally on different VLANs).

Ensure multipath-tools is installed on all Proxmox VE hosts. Ensure it starts on boot.

apt list | grep multipath-tools
# If need to install, execute the following line.
apt-get install multipath-tools
systemctl enable multipathd

Collect the iscsi host iqn for all Proxmox VE hosts and provide that to the Storage admin.

cat /etc/iscsi/initiator.name

Ensure SVM is available with iSCSI protocol enabled. Follow ONTAP 9 documentation

Have two lifs per controller dedicated for iSCSI.

Create igroup and populate the host iscsi initiators.

Create the LUN with desired size on the SVM and present to igroup created in above step.

Notify virtualization admin that lun is created.

Go to Management UI https:<proxmox node>:8006, click on datacenter, select storage, click Add and select iSCSI.

Provide storage id name. The iSCSI lif address from ONTAP should be able to pick the target when there is no communication issue. As our intention is to not directly provide LUN access to the guest vm, uncheck that.

Now, click Add and select LVM.

Provide storage id name, pick base storage that should match the iSCSI storage the we created in the above step. Pick the LUN for the base volume. Provide the volume group name. Ensure shared is selected.

Here is the sample storage configuration file for LVM using iSCSI volume.