IBM SAN Volume Controller 2145-SV1 Hardware Installation Manual page 121

Figure 99. Example of SAS cables routed through the cable management arms
9. When both ends of a SAS cable are correctly connected, the green link-LED next to the connected SAS
ports are lit.
For example, Figure 100 on page 89 shows the LEDs of expansion canister 1 on a 2145-92F
expansion enclosure. The SAS cable is successfully inserted in to port 1 (input); port 2 (output) does
not contain a SAS cable.
Figure 100. SAS cable correctly inserted into the SAS port
Chapter 4. Installing an optional 5U SAS expansion enclosure 89