2.1 Portfolio simplification2.2 Hardware comparison overview of the IBM FlashSystem 5000 and 51002.3 FlashSystem 50002.3.1 Hardware Overview for the FlashSystem 50102.3.2 Hardware overview for a FlashSystem 50302.4 FlashSystem 51002.4.1 Model 4H4 supported hardware2.4.2 Supported fabric protocols2.4.3 Host Interface Cards2.4.4 On board ports