Methods, apparatus and computer program product implement enhanced dynamic copy-on-write storage compression. For a write operation, a freed block is detected by the COW storage for compressing freed blocks from the COW storage. Responsive to the detected freed block being a previously written block...http://www.google.com.au/patents/US7752170?utm_source=gb-gplus-sharePatent US7752170 - Implementing dynamic copy-on-write (COW) storage compression in COW storage through zero and deleted blocks
