There is an instruction how to increase storage capacity using GUI below Page-3.
Can I same things by CLI? I can not find the way to do by CLI.
You can use Deploy CLI to add the disks.
Here is the command syntax to add the disk from the deploy CLI for a HA system.
(ONTAPdeploy) node storage pool attach -cluster-name Sanjeev -node-name Sanjeev-01 -capacity-limit 1TB -name datastore3 -mirror datastore4 -username admin -foreground
Password for admin:
[Request 50164 (success)]: Storage add for node "Sanjeev-01" in cluster "Sanjeev" completed successfully.
Cluster Name: Sanjeev
Capacity-Limit: 1TB (Size of the Disk )
Name: datastore 3 ( Name of the Datastore where the vmdk is being created)
Mirror: datastore4 (Name of the Datastore where the mirror vmdk is being created)
Password: ONTAP password.