Method for de-duplication of data stored in storage medium, involves checking whether write requests not executed by computer system exists and generating one or more new references already recognized as no longer required signatures

摘要

The method involves checking presence of duplicate of already stored data block in storage medium, so as to store write request for storing data block in storage medium. The reference is associated with the stored data block of corresponding signature. Removal of unwanted signatures is carried out without performing synchronization of asynchronous machines (10,20). The checking of whether write requests not executed by computer system (100) exists is performed and one or more new references already recognized as no longer required signatures are generated. Independent claims are included for the following: (1) computer system; and (2) asynchronous machine.