Systems and methods for demand-based storage

A first storage device coupled to a first computing device over a first link and a second computing device over a second link, the first storage device comprising:

• a storage medium;
• and
• a processing circuit connected to the storage medium, the processing circuit being configured to:
• receive, from the second computing device, information about accessible storage capacity, wherein the second computing device is configured to transmit the information based on identifying a service plan subscribed to on behalf of the first computing device;
• advertise the accessible storage capacity to the first computing device, wherein the accessible storage capacity advertised to the first computing device is greater than a capacity of the storage medium;
• receive from the first computing device, based on the information, a first request to allocate a first storage capacity;
• transmit a second request for allocating at least a portion of the first storage capacity on a second storage device configured to communicate with the first storage device over a second link, wherein the second storage device is configured to allocate the portion of the first storage capacity based on the second request;
• receive a first storage command from the first computing device;
• generate a second storage command based on the first storage command;
• and
• transmit the second storage command to the second storage device for execution of the second storage command by the second storage device, wherein the second storage device is configured to perform an input-output operation based on the second storage command.