IBM Storwize V7000 Unified Series Problem Determination Manual page 26

v The model description that is shown on the left end cap.
v The number of ports at the rear of the enclosure. Control enclosures have
v The number of LEDs on the power supplies. Control enclosure power supplies
2
Storwize V7000 Unified: Problem Determination Guide Version
Ethernet ports, Fibre Channel ports, and USB ports. Expansion enclosures do not
have any of these ports.
have six; expansion enclosure power supplies have four.