International Business Machines Corporation
Logical deletions in append only storage devices

Abstract:

A computer-implemented method includes receiving a plurality of storage requests to store a plurality of objects in a dispersed storage network. The computer-implemented method further includes transforming each object in the plurality of objects into a set of error encoded slices. The computer-implemented method further includes dispersing each error encoded slice in each set of error encoded slices to a memory zone of a distinct storage unit. The computer-implemented method further includes co-locating two or more error encoded slices in a common memory zone of a storage unit based, at least in part, on an expiry time associated with the two or more encoded slices. The computer-implemented method further includes logically deleting the common memory zone of the storage unit after all error encoded slices stored in the common memory zone have expired.