How do I change the number of Racks in a Datacenter? vNodes to Tablets migration

[Guy]

Originally from the User Slack

@Mahdi_KamaliMahdi_Kamali: All nodes of my ScyllaDB cluster have the same “rack”. What is the easiest way to make the DC have 3 racks?
I think adding a single new node with new rack needs too much disk space because of rackaware replication. Am I right?
I’m going to migrate from vnodes to tablets. So I should make keyspaces rf-rack-valid.

@Felipe_Cardeneti_Mendes: Right. You can add a new DC with 3 racks, rebuild and decommission the single-zone one.