StorageClass resource object describes and classifies storage that can
be requested, as well as provides a means for passing parameters for
dynamically provisioned storage on demand.
StorageClass objects can also
serve as a management mechanism for controlling different levels of
storage and access to the storage. Cluster Administrators (
or Storage Administrators (
storage-admin) define and create the
StorageClass objects that users can request without needing any detailed
knowledge about the underlying storage volume sources.
The OKD persistent volume framework enables this functionality
and allows administrators to provision a cluster with persistent storage.
The framework also gives users a way to request those resources without
having any knowledge of the underlying infrastructure.
Many storage types are available for use as persistent volumes in
OKD. While all of them can be statically provisioned by an
administrator, some types of storage are created dynamically using the
built-in provider and plugin APIs.