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In Kubernetes, a volume is a directory on a disk that is accessible to the containers inside a pod. While Kubernetes supports many types of volumes, we recommend a vSAN storage type for the Telco Cloud Platform Core deployment. The vSphere cluster at the data center can have three or more ESXi hosts to support the vSAN storage.
Note: If vSAN storage is used in the data center, follow the vSAN storage policies.
vSAN storage policies define storage requirements for your storage class. Cloud Native Persistent Storage or Volume (PV) inherits the performance and availability characteristics that are made available by the vSAN storage policy. These policies determine how the storage objects are provisioned and allocated in the data store to guarantee the required level of service. “Kubernetes Storage Class” is a way for Kubernetes administrators to describe the “classes” of storage that are available for a Tanzu Kubernetes cluster. Different storage classes map to different vSAN storage policies.