Percona Kubernetes Operators support various options for storage: Persistent Volume (PV), hostPath, ephemeral storage, etc. In most of the cases, PVs are used, which are provisioned by the Operator through Storage Classes and Persistent Volume Claims. Storage Classes define the underlying volume type that should be used (ex. AWS, EBS, gp2, or io1), file system [&]

https://www.percona.com/blog/2021/04/20/change-storage-class-on-kubernetes-on-the-fly/