Home > Storage > PowerMax and VMAX > Storage Admin > Persistent Storage for Containerized Applications on Kubernetes with PowerMax SAN Storage > Introduction
With shared infrastructure such as a Kubernetes cluster, quotas are a useful way to ensure that workloads have the appropriate extent of shared resources. Kubernetes offers several mechanisms to limit storage usage. These mechanisms are defined and enforced at different layers of the infrastructure (Pod definition, Storage Class, namespace).
If you need an extra layer of control to protect the credentials, add RBAC support for storage resources on the array side or implement fine-grained quotas for multiple Kubernetes clusters. The CSM Authorization module enables these features.