b. Connect SAS port 2 of the right node canister in the control enclosure to
SAS port 1 of the right expansion canister in the second expansion
enclosure.
3. If more expansion enclosures are installed, connect each one to the previous
expansion enclosure in a chain; use two Mini SAS HD to Mini SAS HD cables,
as shown in Figure 20 on page 27.
4. If two control enclosures are installed ( Storwize V5030 and Storwize V5030F
only), repeat this cabling procedure on the second control enclosure and its
expansion enclosures.
SAS cabling guidelines
When connecting SAS cables between 2U expansion enclosures, you must follow a
list of guidelines to ensure that your configuration is valid.
Orienting the connector
When inserting SAS cables, make sure the connector (Figure 21) is oriented
correctly.
v The orientation of the connector must match the orientation of the port before
you push the connector into the port. The cable connector and socket are keyed,
and it is important that you have proper alignment of the keys when the cable is
inserted.
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.
v When both ends of a SAS cable are inserted correctly, the green link LEDs next
to the connected SAS ports are lit.
Connecting SAS cables
Be aware of the following guidelines when you attach the cables to the SAS ports
in 2U expansion enclosures.
v No more than 10 expansion enclosures can be chained to SAS port 1 of a node
canister. The expansion enclosures in this chain should be installed below the
control enclosure.
Figure 21. SAS cable connectors
28 Storwize V5000 Gen2: Quick Installation Guide
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