678 Implementing the IBM Storwize V7000 with IBM Spectrum Virtualize V8.2.1
13.1.3  Dense Drawer Enclosures LED
As Figure 13-3 shows, two 12 Gbps SAS ports are side by side on the canister of every 
enclosure. They are numbered 1 on the right and 2 on the left. Each Dense Drawer has two 
canisters side by side.
Figure 13-3   Dense Drawer LEDs
The interpretation of SAS status LED indicators has the same meaning as the LED indicators 
of SAS ports mentioned in the previous section (see Table 13-5 on page 677). 
Table 13-6 shows the LED status values of the expansion canister.
Table 13-6   Expansion canister LEDs statuses
13.1.4  Enclosure SAS cabling
Expansion enclosures are attached to control enclosures through 12 Gbps SAS cables. IBM 
Storwize V7000 Gen2 control enclosure attaches up to 20 expansion enclosures or up to four 
Dense Drawer enclosures.
Position Color Nam e State Meaning
Right Green Power On The canister is powered on.
Off No power available to the canister.
Middle Green Status On The canister is operating normally.
Flashing There is an error with the VPD.
Left Amber Fault On There is an error logged against the canister 
or the system is not running (OSES).
Flashing Canister is being identified.
Off No fault, canister is operating normally.