# Plan Storage Plan storage for Confluent Platform components deployed with Confluent for Kubernetes. CFK requires a Kubernetes Storage Class to provision persistent volumes for most Confluent Platform components, using block-level storage solutions such as AWS EBS, Azure Disk, GCE Disk, Ceph RBD, and Portworx. Object storage and network file storage are not supported. | Component | Persistent volumes | Notes | |----------------------------------------------------------------------------------------|----------------------|-----------------------------------------------------------------------| | Apache Kafka® | 1 per broker | Block storage only; network-attached storage (NAS) is not recommended | | ZooKeeper | 2 per node | Uses the same storage solution as Kafka | | Connect | None | Stateless; no Storage Class required | | Schema Registry | None | Stateless; no Storage Class required | | Other Confluent Platform components (for example, ksqlDB and Confluent Control Center) | 1 each | Maintains working state during the component’s lifetime | For storage class configuration steps and vendor-specific setup details, see [Configure Storage for Confluent Platform Using Confluent for Kubernetes](co-storage.md#co-storage).