IBM Storwize V5010 Manual page 696

SAS ports
SAS ports are used to connect the expansion canister to the node canister or to an extra
expansion canister in the chain. Figure 12-17 shows the SAS ports that are on the expansion
canister.
Figure 12-17 Expansion canister SAS ports
Each port has two LEDs that display the status of its activity. Their meanings are shown in
Table 12-5.
Table 12-5 SAS port status LEDs
Name and
position
Fault (left)
Link (right)
Canister status
The status of each expansion canister is displayed by three LEDs on the back of the unit, as
shown in Figure 12-18.
Figure 12-18 Enclosure canister status LEDs
674
Implementing the IBM Storwize V5000 Gen2 with IBM Spectrum Virtualize V8.1
Color State
Amber Solid
Off
Green Solid
Off
Meaning
One of the following errors exists:
Only 1, 2, or 3 lanes (phys) have a connection.
Not all of the lanes (phys) that have a
connection are running at the same speed.
Not all of the lanes (phys) that have a
connection are attached to the same address.
An unsupported device is connected to the port.
No fault exists. All four lanes (phys) have a
connection.
A connection exists on at least one lane (phy).
No connection exists on any lane (phy).