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Add a Second SC280 Expansion Enclosure to the A-Side of the Chain
Connect the expansion enclosure to one side of the chain at a time to maintain drive availability.
1.
Turn on the expansion enclosure being added. When the drives spin up, make sure that the front
panel and power status LEDs show normal operation.
2.
Disconnect the A-side cable (shown in orange) from the expansion enclosure left EMM, port B. The
B-side cables continue to carry I/O while the A-side is disconnected.
Figure 141. Disconnect the A-Side Cables from the Expansion Enclosure
1.
Storage system
3.
Storage controller 2
3.
Connect the A-side cable that was disconnected in the previous step to the new expansion
enclosure (2): left EMM, port C.
4.
Use a new SAS cable to connect expansion enclosure 1: left EMM, port B to the new expansion
enclosure (2): left EMM, port A.
Adding or Removing an Expansion Enclosure
2.
Storage controller 1
4.
Expansion enclosure 1
157
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