To connect the fibre channel cables to the node canisters, complete the following steps: Note:  Each node canister must have the same number of cables connected to it. Attention:  The information in this section is intended only for IBM authorized service  providers. Customers need to consult the terms of their warranty to determine the extent to  which they should attempt any IBM FlashSystem hardware installation. Complete the following steps to power on the FlashSystem 9100: The model A9F expansion enclosure has two power supply units that are accessible from the  front of the enclosure ( 4  in Figure 6-41 on page 199). The power supply units are covered by  the 1U fascia panel  5 . Each power supply unit has a power supply connector and power cord,  which are accessible from the back of the expansion enclosure. Power is provided by  connecting the power cords to the power source and, if necessary, switching on the power  source. The expansion enclosure does not have a power button.  198  IBM FlashSystem 9100 Architecture, Performance, and Implementation Powering on the model A9F expansion enclosure 3. Power on the control enclosure using the directions in “Powering on the control enclosure”  on page 201. 2. Power on any mode AFF expansion enclosures using the directions in “Powering on the  model AFF expansion enclosure” on page 200. 1. Power on any model A9F expansion enclosures using the directions in “Powering on the  model A9F expansion enclosure”. 6.2.5 Powering on the FlashSystem 9100 Figure 6-40 Control enclosure fibre channel ports 1. Refer to the Network cable connection worksheet in the system planning worksheets for  the number of cables to connect, and the location of each cable. 2. Connect each fibre channel to the specified port. See Figure 6-40 for the adapter location  and port location on each adapter.