It is important to understand the legacy emulation types. In prior PowerMax systems, the emulations were IM, EDS, DS, FA, RF, RE, and EF.
- IM refers to Infrastructure Management which placed common infrastructure tasks on a separate instance to optimize CPU resources. It provided all the environmental monitoring and servicing.
- EDS stands for Enginuity Data Services and merged the gap between the Front End and Back End emulations. It ran algorithms for Read (Optimized Read Miss)/Write and provided multi-threading infrastructure for core services like replication and virtual provisioning along with data reduction services.
- DS refers to the back-end emulation.
- FA stands for Fibre Adapter and runs the Fibre Channel emulation.
- RF refers to SRDF over Fibre Channel
- RE refers to SRDF over GigE
- EF runs the FICON emulation for mainframe connectivity.