Connecting Sas Cables To Expansion Enclosures; Sas Cable Connectors - IBM Storwize V5000 Quick Installation Manual

Connecting SAS cables to expansion enclosures

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5. Reinstall the left and right end caps as shown in Figure 11 on page 16. The left
end cap has indicator windows that align with the status LEDs (light-emitting
diodes) on the edge of the enclosure.
a. Ensure that the serial number of the end cap matches the serial number on
the rear of the enclosure.
b. Fit the slot on the top of the end cap over the tab on the chassis flange.
c. Rotate the end cap down until it snaps into place.
d. Ensure that the inside surface of the end cap is flush with the chassis.
This task applies if you are connecting one or more expansion enclosures to a
control enclosure.
About this task
This task applies if you are installing one or more expansion enclosures. Each
control enclosure in the system can manage two sets of expansion enclosures, with
each set consisting of a maximum of three expansion enclosures. Hence, a system
containing two control enclosures can have up to twelve expansion enclosures.
Each set of expansion enclosures is connected together sequentially through the in
and out SAS ports, forming a chain with a control enclosure at the end of the
chain.
Note: When inserting SAS cables, make sure the connector (Figure 12) is oriented
correctly.
v The blue pull tab must be below the connector.
v Insert the connector gently until it clicks into place. If you feel resistance, the
connector is probably oriented the wrong way. Do not force it.
v When inserted correctly, the connector can only be removed by pulling the tab.
Figure 12. SAS cable connectors
Be aware of the following guidelines when you begin to attach the cables to the
SAS ports.
v No more than three expansion enclosures can be chained to port 3 of a node
canister. The expansion enclosures in this chain should be installed below the
control enclosure (as shown in Figure 13 on page 18).
Chapter 2. Installing the hardware
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