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

**URL:** <https://forum.scylladb.com/t/how-do-i-change-the-number-of-racks-in-a-datacenter-vnodes-to-tablets-migration/5574>\
**Category:** ScyllaDB\
**Tags:** administration, tablets, rack\
**Created:** [November 9, 2026, 5:45am UTC](https://forum.scylladb.com/t/how-do-i-change-the-number-of-racks-in-a-datacenter-vnodes-to-tablets-migration/5574 "2026-11-09T05:45:02Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Guy](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.scylladb.com/guy/32/9_2.png) [@Guy](https://forum.scylladb.com/u/Guy)\
**Post date:** [November 9, 2026, 5:45am UTC](https://forum.scylladb.com/t/how-do-i-change-the-number-of-racks-in-a-datacenter-vnodes-to-tablets-migration/5574/1 "2026-11-09T05:45:02Z")

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> [@](#):
>
> **[Originally from the User Slack](https://scylladb-users.slack.com/)**
> 
> ![Mahdi_Kamali](https://us1.discourse-cdn.com/flex016/uploads/scylladb/original/2X/7/7fb1a0a118e8eb1518763300c376e9c0ce9db7bc.png) @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](https://us1.discourse-cdn.com/flex016/uploads/scylladb/original/1X/233a9d524fbc97e39f08633c16b3dd2575d1d1f4.jpeg) @Felipe\_Cardeneti\_Mendes: Right. You can add a new DC with 3 racks, rebuild and decommission the single-zone one.