Loading patent…
AssigneeInternational Business Machines Corporation
InventorsPaul Nicholas Cashman, Gemma Izen, Ben Sasson
Estimating the term…
Storing data volumes in virtual and physical address spaces such that the data units are contiguous in virtual address space but fragmented in physical address space. The mapping between virtual and physical address space is managed by a storage controller that is configured to implement deletes reversibly with a so-called soft delete, the soft delete being reversible up to a later permanent or hard delete. A soft delete triggers a compaction in which the data units of the to-be-deleted volume are gathered together in physical address space. During the time between compaction and hard delete (or restore), the soft deleted volume is thus stored in a space efficient manner. Moreover, the subsequent hard delete can be performed more quickly than if the soft deleted volume were still fragmented across physical address space freeing up space quicker.
A computer-implemented method comprising:
(canceled)
A computer program product comprising a computer-readable storage medium having a set of instructions stored therein which, when executed by a processor, causes the processor to perform operations on a data volume by:
(canceled)
(canceled)
A computer system comprising:
(canceled)
Dependencies are inferred from the claim text.