Systems, devices, and methods are disclosed herein for containerized scalable storage applications. Methods may include instantiating an application instance based on a plurality of application instance parameters, the application instance being configured to utilize a plurality of storage volumes implemented in a storage cluster. Methods may also include enumerating a plurality of unattached storage volumes included in the cluster associated with the application instance, the plurality of unattached storage volumes having a plurality of underlying physical storage devices, and the plurality of unattached storage volumes being identified based on a plurality of application instance parameters. The methods may further include attaching at least some of the plurality of unattached storage volumes to the application instance, wherein the attaching enables the application instance to access data stored in the attached storage volumes.