3.1 Overview3.2 IBM Real-time Compression3.2.1 Random Access Compression Engine3.2.2 Location-based compression3.2.3 Temporal compression3.2.4 RACE in the SAN Volume Controller software stack3.2.5 Data write flow3.2.6 Data read flow3.2.7 Compression of existing data3.3 Software and hardware updates that enhance IBM Real-time Compression3.3.1 Software enhancements3.3.2 Hardware enhancements