# Scaling a `TiDB` Cluster in `TiDB Cloud` (TiDB Dedicated Only)

__*zz-Issue-Diagram*__

+ Self-service scaling operations:
  + Increase or decrease the number of `TiDB` nodes
  + Increase the number of `TiKV` nodes
  + Increase the storage size of `TiKV` nodes
  + Increase the number of `TiFlash` nodes
  + Increase the storage size of `TiFlash` nodes
+ Scaling operations by contacting TiDB Cloud support:
  + Decrease the number of `TiKV` nodes
  + Decrease the storage size of `TiKV` nodes
  + Decrease the number of `TiFlash` nodes
  + Decrease the storage size of `TiFlash` nodes

![`smart`](./student-guide/diagram/ScaleTiDBCluster_aa_001_20220923.png)

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