Patent ID: 8266325

Claim:
A system for facilitating data compression, comprising: a processor device in communication with a memory device, wherein the processor device is configured for: mapping a set of logical extents, each of the set of logical extents having compressed logical tracks of data, to a head physical extent and, if the head physical extent is determined to have been filled, to at least one overflow extent having spatial proximity to the head physical extent, and pursuant to at least one subsequent write operation and destage operation, the at least one subsequent write operation and destage operation determined to be associated with the head physical extent, mapping the at least one subsequent write operation and destage operation to one of the head physical extent, the at least one overflow extent, and an additional extent having spatial proximity to the at least one overflow extent; wherein the mapping of the at least one subsequent write operation and destage operation to the head physical extent is performed using a hash function incorporating compressed volume identification (id) and an extent number in a compressed volume associated with the compressed volume id.