1. A method for a policy-based storage appliance virtualization that identifies storage space based on a specified storage management operation type, the method comprising: specifying a specified storage management operation type in a request; checking one or more policies in a management console to identify storage space that can be used with the specified storage management operation type, where the storage space is provided by at least one storage appliance; and identifying the storage space that can be used with the specified storage management operation type, in response to checking the one or more policies.