The SAS ports are numbered 1 on the left and 2 on the right as shown in Figure 19.
Use of port 1 is required. Use of port 2 is optional. Each port connects four data
channels.
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.
v 1 Port 1, 6 Gbps SAS port and LEDs
v 2 Port 2, 6 Gbps SAS port and LEDs
Four LEDs are located with each port. Each LED describes the status of one data
channel within the port. The data channel is shown with the LED.
Table 15. SAS port LEDs on the expansion canister
LED state Description
Off No link is connected.
Flashing The link is connected and has activity.
On The link is connected.
Expansion canister LEDs
Each expansion canister has two LEDs that provide status and identification for the
expansion canister.
The two LEDs are located in a vertical row on the left side of the canister.
Figure 20 on page 17 shows the LEDs (1) in the rear of the expansion canister.
svc00668
1
1
2
2
Figure 19. SAS ports and LEDs in rear of expansion enclosure
16 Storwize V7000: Troubleshooting, Recovery, and Maintenance Guide
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