Sas Ports And Leds In Rear Of Expansion; Sas Port Leds On The Expansion Canister - IBM Storwize V7000 Maintenance Manual

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.
Figure 19. SAS ports and LEDs in rear of expansion enclosure
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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.
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.
16
Storwize V7000: Troubleshooting, Recovery, and Maintenance Guide
1 Port 1, 6 Gbps SAS port and LEDs
2 Port 2, 6 Gbps SAS port and LEDs
Table 14. SAS port LEDs on the expansion canister
LED state
Off
Flashing
On
1 2
2 1
Description
No link is connected.
The link is connected and has activity.
The link is connected.