International Business Machines Corporation
Continuous storage of data in a system with limited storage capacity

Abstract:

Techniques for automatically recreating data removed from storage are disclosed. A request to access data at a first storage location is received. It is determined, based on a catalog and using a computer processor, that the data has been removed from the first storage location. In response the data at the first storage location is automatically recreated using the computer processor. The recreating includes identifying a second storage location for the data, based on the catalog, retrieving the data from the second storage location, and storing the data at the first storage location. The catalog is updated to reflect recreating the data at the first storage location.