9.19.4. Migrate a VM disk to a different storage class
You can migrate one or more virtual disks to a different storage class to optimize storage performance or reduce costs without stopping your virtual machine (VM) or virtual machine instance (VMI).
9.19.4.1. About storage class migration
A persistent volume claim (PVC) requests storage with specific attributes, such as size and performance, defined by its storage class. You cannot change a PVC’s storage class after you create it.
The storage backend that provisioned the original PVC holds the VM’s data. The target storage class might use a different backend, which does not have that data until you migrate it there.
To move a VM disk to a new storage class, you create a migration plan. The migration plan creates a new PVC in the target storage class and copies the data from the original PVC to the new PVC.
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