IBM Storwize V7000 Installation Manual page 25

1 2
2 1
Figure 3. SAS ports and LEDs in rear of expansion enclosure
Each canister has two SAS ports that are numbered 1 on the left 1 and 2 on the
right 2 .
Port 1 is the input port, as indicated by the arrow at 1 . Port 1 must always be
connected.
Port 2 is the output port, as indicated by the arrow at 2 . Port 2 is only connected
if this expansion unit is not the last one in the chain.
Note: The reference to the left and right locations applies to canister 1, which is
the upper canister. The port locations are inverted for canister 2, which is the lower
canister.
7
Chapter 3. Before you begin the installation