VERITAS NetBackup 5240 Hardware Installation Manual page 105

Adding one or more storage shelves to an operating 4TB appliance that does not have any storage shelves
9
Connect a SAS-3 cable to port A of the bottom I/O module in the third shelf.
Connect the other end of the cable to the right port in the appliance External
RAID PCIe card.
10
Be sure that the blue clip on the connector in port A points up. The blue clip in
the appliance port connector should point down
Connecting three storage shelves to an appliance
105